diff --git a/.eslintrc.cjs b/.eslintrc.cjs index 9eb7a30..f7e8167 100644 --- a/.eslintrc.cjs +++ b/.eslintrc.cjs @@ -4,23 +4,24 @@ const config = { parserOptions: { project: true, }, - plugins: [ - "@typescript-eslint", - ], + plugins: ["@typescript-eslint"], extends: [ "next/core-web-vitals", "eslint:recommended", "plugin:jsx-a11y/recommended", "plugin:@typescript-eslint/recommended-type-checked", "plugin:@typescript-eslint/stylistic-type-checked", - "plugin:@cspell/recommended" + "plugin:@cspell/recommended", + "plugin:tailwindcss/recommended", + ], + overrides: [ + { + files: ["*.test.*"], + rules: { + "@cspell/spellchecker": "off", + }, + }, ], - overrides: [{ - "files": ["*.test.*"], - "rules": { - "@cspell/spellchecker": "off", - } - }], rules: { // These opinionated rules are enabled in stylistic-type-checked above. // Feel free to reconfigure them to your own preference. @@ -43,23 +44,26 @@ const config = { }, ], "@typescript-eslint/dot-notation": "off", - '@cspell/spellchecker': ['warn', { - checkIdentifiers: false, - cspell: { - ignoreWords: [ - // Our Site Vernacular - "Chessground", - "Chessimprovia", - "chessperson", - "chesspersons", + "@cspell/spellchecker": [ + "warn", + { + checkIdentifiers: false, + cspell: { + ignoreWords: [ + // Our Site Vernacular + "Chessground", + "Chessimprovia", + "chessperson", + "chesspersons", - // Workarounds - "gtag", - "HLBR", - "ndjson", - ] - } - }] + // Workarounds + "gtag", + "HLBR", + "ndjson", + ], + }, + }, + ], }, }; diff --git a/.gitignore b/.gitignore index 6c982f4..f69bea4 100644 --- a/.gitignore +++ b/.gitignore @@ -33,7 +33,10 @@ yarn-error.log* # typescript *.tsbuildinfo next-env.d.ts -/games.pgn # Building puzzles and such +/generate-puzzles/build /build + +# Build files +*.pyc diff --git a/README.md b/README.md index 1803c3b..b7e2751 100644 --- a/README.md +++ b/README.md @@ -1,5 +1,5 @@ -# Tactical Elements +# Chess Coven -New kinds of Chess puzzles that focus on pattern recognition over what moves to play. Also includes a game memorizer tool/game to help my Chess Dojo siblings memorize their games. +New kinds of Chess puzzles that focus on pattern recognition and thought process over what move is best to play. Also includes tools to help my Chess Dojo. -[Live here](https://tactical-elements.danimal.app) +[Live here](https://chesscoven.com) diff --git a/TODO b/TODO new file mode 100644 index 0000000..9277b6a --- /dev/null +++ b/TODO @@ -0,0 +1,15 @@ +ci: validate puzzles on push +feat(ux): exit button from incorrect guess +feat: detect improvement of worthy trades +feat: improved writing +feat: paranormal spotting anomaly game +feat: puzzle generators specify levels with buckets +feat: split captures and checks mini games +fix(game): No Solution does not show incorrect screen +fix(game): despite solution, knight game has no solution as answer +fix(game): number sometimes ignored on enter +fix(style): buttons have different styles +fix(style): site nav does not wrap +fix(ux): position of solutions non-obvious +refactor: externalize game logic +refactor: replace generic input to solution type specific diff --git a/assets/opening-tree.json b/assets/opening-tree.json new file mode 100644 index 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{"c1c3": {"e6e5": {"d4e5": {"d7e5": {"f3e5": {"e7e5": {}}}}}}}}}}}}}}}}}}}}}, "c7c6": {"g1f3": {"f8e7": {"e2e3": {"b8d7": {"a1c1": {"e8g8": {"f1d3": {"d5c4": {"d3c4": {"b7b5": {}}}}}}}}}}}}}}}}}}}, "names": {"g1h3": "Amar Opening", "g1h3 d7d5 g2g3 e7e5 f2f4": "Amar Opening: Paris Gambit", "g1h3 d7d5 g2g3 e7e5 f2f4 c8h3 f1h3 e5f4 e1g1 f4g3 h2g3": "Amar Opening: Paris Gambit, Gent Gambit", "e2e3 e7e5 c2c4 d7d6 b1c3 b8c6 b2b3 g8f6": "Amsterdam Attack", "a2a3": "Anderssen's Opening", "a2a3 a7a5 b2b4": "Anderssen's Opening: Polish Gambit", "f2f3": "Barnes Opening", "f2f3 e7e5 g2g4 d8h4": "Barnes Opening: Fool's Mate", "f2f3 d7d5 e2e4 g7g6 d2d4 d5e4 c2c3": "Barnes Opening: Gedult Gambit", "f2f3 f7f5 e2e4 f5e4 b1c3": "Barnes Opening: Gedult Gambit", "f2f3 e7e5 e1f2": "Barnes Opening: Hammerschlag", "h2h3": "Clemenz Opening", "h2h3 h7h5 g2g4": "Clemenz Opening: Spike Lee Gambit", "a2a4 e7e5 h2h4": "Crab Opening", "h2h3 d7d5 a2a3 e7e5": "Creepy Crawly Formation: Classical Defense", "a2a3 e7e5 b2b3 d7d5 c2c3 g8f6 d2d3 b8c6 e2e3 f8d6 f2f3 e8g8 g2g3": "Formation: Hippopotamus Attack", "a2a3 e7e5 g2g3 d7d5 f1g2 g8f6 d2d3 b8c6 b1d2 f8d6 e2e3 e8g8 h2h3": "Formation: Shy Attack", "h2h3 e7e5 a2a3": "Global Opening", "g2g4": "Grob Opening", "g2g4 f7f5": "Grob Opening: Alessi Gambit", "g2g4 g7g5": "Grob Opening: Double Grob", "g2g4 g7g5 f2f4": "Grob Opening: Double Grob, Coca-Cola Gambit", "g2g4 d7d5 f1g2": "Grob Opening: Grob Gambit", "g2g4 d7d5 f1g2 c7c6": "Grob Opening: Grob Gambit Declined", "g2g4 d7d5 f1g2 h7h5 g4h5": "Grob Opening: Grob Gambit, Basman Gambit", "g2g4 d7d5 f1g2 c8g4 c2c4": "Grob Opening: Grob Gambit, Fritz Gambit", "g2g4 d7d5 f1g2 c8g4 c2c4 d5d4 g2b7 b8d7 b7a8 d8a8": "Grob Opening: Grob Gambit, Fritz Gambit, Romford Countergambit", "g2g4 d7d5 f1g2 e7e5 d2d4 e5d4 c2c3": "Grob Opening: Grob Gambit, Keres Gambit", "g2g4 d7d5 f1g2 c7c6 c2c4 d5c4 b2b3": "Grob Opening: Grob Gambit, Richter-Grob Gambit", "g2g4 d7d5 h2h3 e7e5 f1g2 c7c6": "Grob Opening: Keene Defense", "g2g4 d7d5 h2h3 e7e5 f1g2 c7c6 d2d4 e5e4 c2c4 f8d6 b1c3 g8e7": "Grob Opening: Keene Defense, Main Line", "g2g4 e7e5 h2h3 b8c6": "Grob Opening: London Defense", "g2g4 d7d5 f1g2 c8g4 c2c4 d5d4": "Grob Opening: Romford Countergambit", "g2g4 d7d5 f1g2 c7c6 g4g5": "Grob Opening: Spike Attack", "g2g4 e7e5 f1g2 d7d5 c2c4": "Grob Opening: Spike, Hurst Attack", "g2g4 d7d5 e2e4 d5e4 b1c3": "Grob Opening: Zilbermints Gambit", "g2g4 d7d5 e2e4 d5e4 b1c3 h7h5": "Grob Opening: Zilbermints Gambit, Schiller Defense", "g2g4 d7d5 e2e4 d5e4 b1c3 e7e5 d2d3": "Grob Opening: Zilbermints Gambit, Zilbermints-Hartlaub Gambit", "g2g3": "Hungarian Opening", "g2g3 b8c6 b1c3 d7d5 d2d4 e7e5 d4e5 d5d4 c3e4 f7f5": "Hungarian Opening: Asten Gambit", "g2g3 e7e5 a2a3 d7d5 g1f3 e5e4 f3h4 f8e7 d2d3": "Hungarian Opening: Burk Gambit", "g2g3 d7d5 f1g2 e7e5 b2b4": "Hungarian Opening: B\u00fccker Gambit", "g2g3 d7d5 f1g2 e7e6": "Hungarian Opening: Catalan Formation", "g2g3 f7f5": "Hungarian Opening: Dutch Defense", "g2g3 g8f6": "Hungarian Opening: Indian Defense", "g2g3 g7g5": "Hungarian Opening: Myers Defense", "g2g3 f7f5 e2e4 f5e4 d1h5 g7g6": "Hungarian Opening: Pachman Gambit", "g2g3 e7e5 g1h3 d7d5 f2f4 c8h3 f1h3 e5f4 e1g1": "Hungarian Opening: Paris Gambit", "g2g3 e7e5 g1f3": "Hungarian Opening: Reversed Alekhine", "g2g3 e7e5 g1f3 e5e4 f3g1 g8f6 b2b4": "Hungarian Opening: Reversed Brooklyn Defense, Brooklyn Benko Gambit", "g2g3 d7d5 f1g2 c7c5": "Hungarian Opening: Reversed Modern Defense", "g2g3 e7e5 g1f3 e5e4 f3h4": "Hungarian Opening: Reversed Norwegian Defense", "g2g3 c7c5": "Hungarian Opening: Sicilian Invitation", "g2g3 d7d5 f1g2 c7c6": "Hungarian Opening: Slav Formation", "g2g3 g7g6": "Hungarian Opening: Symmetrical Variation", "g2g3 h7h5 g1f3 h5h4": "Hungarian Opening: Van Kuijk Gambit", "g2g3 d7d5 f1g2 e7e5 c2c4 d5c4 b2b3": "Hungarian Opening: Winterberg Gambit", "h2h4": "K\u00e1das Opening", "h2h4 d7d5 h1h3": "K\u00e1das Opening: Beginner's Trap", "h2h4 a7a5": "K\u00e1das Opening: Koola-Koola Variation", "h2h4 c7c5 b2b4": "K\u00e1das Opening: K\u00e1das Gambit", "h2h4 d7d5 d2d4 c7c5 g1f3 c5d4 c2c3": "K\u00e1das Opening: K\u00e1das Gambit", "h2h4 e7e5 d2d4 e5d4 c2c3": "K\u00e1das Opening: K\u00e1das Gambit", "h2h4 d7d5 d2d4 c7c5 e2e4": "K\u00e1das Opening: Myers Variation", "h2h4 g7g5": "K\u00e1das Opening: Schneider Gambit", "h2h4 f7f5 e2e4 f5e4 d2d3": "K\u00e1das Opening: Steinbok Gambit", "g2g3 h7h5": "Lasker Simul Special", "d2d3": "Mieses Opening", "d2d3 g7g6 g2g4": "Mieses Opening: Myers Spike Attack", "d2d3 e7e5": "Mieses Opening: Reversed Rat", "b2b4": "Polish Opening", "b2b4 d7d5 c1b2 c8f5": "Polish Opening: Baltic Defense", "b2b4 c7c5": "Polish Opening: Birmingham Gambit", "b2b4 e7e5 c1b2 f7f6 b4b5": "Polish Opening: Bugayev Advance Variation", "b2b4 e7e5 a2a3": "Polish Opening: Bugayev Attack", "b2b4 e7e5 c1b2 d7d6": "Polish Opening: Czech Defense", "b2b4 f7f5": "Polish Opening: Dutch Defense", "b2b4 d7d5 c1b2 d8d6": "Polish Opening: German Defense", "b2b4 b8c6": "Polish Opening: Grigorian Variation", "b2b4 g8h6": "Polish Opening: Karniewski Variation", "b2b4 g8f6 c1b2 g7g6": "Polish Opening: King's Indian Variation", "b2b4 g8f6 c1b2 g7g6 e2e4": "Polish Opening: King's Indian Variation, Schiffler Attack", "b2b4 g8f6 c1b2 g7g6 c2c4 f8g7 e2e3 d7d6 g1f3 e8g8 d2d4": "Polish Opening: King's Indian Variation, Sokolsky Attack", "b2b4 d7d5 c1b2 c7c6 a2a4": "Polish Opening: Myers Variation", "b2b4 c7c6": "Polish Opening: Outflank Variation", "b2b4 e7e6 c1b2 g8f6 b4b5 b7b6": "Polish Opening: Queen's Indian Variation", "b2b4 e7e6 c1b2 g8f6 b4b5 a7a6": "Polish Opening: Queenside Defense", "b2b4 e7e6 c1b2 g8f6 b4b5 a7a6 a2a4 a6b5 a4b5 a8a1 b2a1": "Polish Opening: Rooks Swap Line", "b2b4 e7e6 c1b2 g8f6 b4b5 d7d5 e2e3": "Polish Opening: Schiffler-Sokolsky Variation", "b2b4 c7c6 c1b2 a7a5 b4b5 c6b5 e2e4": "Polish Opening: Schuehler Gambit", "b2b4 b7b5": "Polish Opening: Symmetrical Variation", "b2b4 e7e5 c1b2 f7f6 e2e4": "Polish Opening: Tartakower Gambit", "b2b4 e7e5 c1b2 c7c5": "Polish Opening: Wolferts Gambit", "c2c3": "Saragossa Opening", "b1a3": "Sodium Attack", "b1a3 e7e5 d2d3 f8a3 b2a3 d7d5 e2e3 c7c5 a1b1": "Sodium Attack: Celadon Variation", "b1a3 g7g6 g2g4": "Sodium Attack: Chenoboskion Variation", "b1a3 e7e5 a3c4 b8c6 e2e4 f7f5": "Sodium Attack: Durkin Gambit", "d2d3 e7e5 b1d2": "Valencia Opening", "b1c3": "Van Geet Opening", "a2a3 e7e5 b1c3": "Van Geet Opening: Battambang Variation", "b1c3 e7e5 g1f3 f8c5": "Van Geet Opening: Billockus-Johansen Gambit", "b1c3 d7d5 f2f4 e7e5": "Van Geet Opening: Damhaug Gambit", "b1c3 d7d5 e2e4 d5e4 f2f3": "Van Geet Opening: Dougherty Gambit", "b1c3 d7d5 e2e4 d5e4 d2d3": "Van Geet Opening: Dunst-Perrenet Gambit", "b1c3 c7c5 b2b4": "Van Geet Opening: D\u00fcsseldorf Gambit", "b1c3 e7e5 b2b3 d7d5 e2e4 d5e4 d2d3": "Van Geet Opening: Gladbacher Gambit", "b1c3 d7d5 e2e4 d5e4 f1c4": "Van Geet Opening: Hector Gambit", "b1c3 d7d6 f2f4 e7e5 f4e5 b8c6": "Van Geet Opening: Hergert Gambit", "b1c3 e7e5 e2e3 d7d5 d1h5 c8e6": "Van Geet Opening: Hulsemann Gambit", "b1c3 d7d5 f2f4 d5d4 c3e4 f7f5 e4f2 g8f6 g1f3 c7c5 b2b4": "Van Geet Opening: Jendrossek Gambit", "b1c3 f7f5 e2e4 f5e4 d2d3": "Van Geet Opening: Kluever Gambit", "b1c3 b7b5": "Van Geet Opening: Laroche Gambit", "b1c3 e7e5 e2e3 d7d5 d1h5 g8f6": "Van Geet Opening: Liebig Gambit", "b1c3 d7d5 f2f4 d5d4 c3e4 c7c5": "Van Geet Opening: Melleby Gambit", "b1c3 g7g6 h2h4": "Van Geet Opening: Myers Attack", "b1c3 e7e5 g1f3 b8c6 d2d4": "Van Geet Opening: Napoleon Attack", "b1c3 c7c5 d2d4 c5d4 d1d4 b8c6 d4h4": "Van Geet Opening: Novosibirsk Variation", "b1c3 e7e5 f2f4 e5f4 e2e4": "Van Geet Opening: Nowokunski Gambit", "b1c3 d7d5 f2f4 d5d4 c3e4 e7e5": "Van Geet Opening: Pfeiffer Gambit", "b1c3 d7d5 f2f4 d5d4 c3e4 e7e5 g1f3": "Van Geet Opening: Pfeiffer Gambit, Sleipnir Countergambit", "b1c3 e7e5": "Van Geet Opening: Reversed Nimzowitsch", "b1c3 e7e5 d2d4 e5d4 d1d4 b8c6 d4a4": "Van Geet Opening: Reversed Scandinavian", "b1c3 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4": "Van Geet Opening: Sicilian Two Knights", "b1c3 d7d5 e2e3 e7e5 d2d4 f8b4": "Van Geet Opening: Sleipnir Gambit", "b1c3 c7c5 a1b1": "Van Geet Opening: Twyble Attack", "b1c3 g8f6 g2g4": "Van Geet Opening: T\u00fcbingen Gambit", "b1c3 d7d5 d2d3 g8f6 g2g3": "Van Geet Opening: Venezolana Variation", "b1c3 d7d5 f2f4 g7g5": "Van Geet Opening: Warsteiner Gambit", "e2e3": "Van't Kruijs Opening", "e2e3 e7e5 f1c4 b7b5 c4b3": "Van't Kruijs Opening: Bouncing Bishop Variation", "e2e3 e7e5 b1c3 g8f6 f2f4 e5f4 g1f3": "Van't Kruijs Opening: Keoni-Hiva Gambit, Akahi Variation", "e2e3 e7e5 b1c3 b8c6 f2f4 e5f4 g1f3": "Van't Kruijs Opening: Keoni-Hiva Gambit, Alua Variation", "e2e3 e7e5 b1c3 d7d5 f2f4 e5f4 g1f3": "Van't Kruijs Opening: Keoni-Hiva Gambit, Ekolu Variation", "d2d3 c7c5 b1c3 b8c6 g2g3": "Venezolana Opening", "a2a4": "Ware Opening", "a2a4 b7b6 d2d4 d7d5 b1c3 b8d7": "Ware Opening: Cologne Gambit", "a2a4 e7e5 a1a3": "Ware Opening: Meadow Hay Trap", "a2a4 e7e5 a4a5 d7d5 e2e3 f7f5 a5a6": "Ware Opening: Ware Gambit", "a2a4 b7b5 a4b5 c8b7": "Ware Opening: Wing Gambit", "b2b3": "Nimzo-Larsen Attack", "b2b3 d7d5": "Nimzo-Larsen Attack: Classical Variation", "b2b3 f7f5": "Nimzo-Larsen Attack: Dutch Variation", "b2b3 c7c5": "Nimzo-Larsen Attack: English Variation", "b2b3 d7d5 c1a3": "Nimzo-Larsen Attack: Graz Attack", "b2b3 g8f6": "Nimzo-Larsen Attack: Indian Variation", "b2b3 e7e5": "Nimzo-Larsen Attack: Modern Variation", "b2b3 e7e5 c1b2 b8c6": "Nimzo-Larsen Attack: Modern Variation", "b2b3 e7e5 c1b2 b8c6 e2e3": "Nimzo-Larsen Attack: Modern Variation", "b2b3 e7e5 c1b2 b8c6 c2c4 g8f6": "Nimzo-Larsen Attack: Modern Variation", "b2b3 e7e5 c1b2 b8c6 f2f4": "Nimzo-Larsen Attack: Pachman Gambit", "b2b3 b7b5": "Nimzo-Larsen Attack: Polish Variation", "b2b3 f7f5 c1b2 e7e6 e2e4": "Nimzo-Larsen Attack: Ringelbach Gambit", "b2b3 g8f6 c1b2 g7g6 g2g4": "Nimzo-Larsen Attack: Spike Variation", "b2b3 b7b6": "Nimzo-Larsen Attack: Symmetrical Variation", "f2f4": "Bird Opening", "f2f4 g8f6": "Bird Opening", "f2f4 g8f6 g1f3 g7g6 b2b4": "Bird Opening: Batavo-Polish Attack", "f2f4 f7f5 d2d4 d7d5": "Bird Opening: Double Duck Formation", "f2f4 e7e5": "Bird Opening: From's Gambit", "f2f4 e7e5 b1c3": "Bird Opening: From's Gambit, Bahr Gambit", "f2f4 e7e5 f4e5 d7d6 e5d6 g8f6": "Bird Opening: From's Gambit, Langheld Gambit", "f2f4 e7e5 f4e5 d7d6 e5d6 f8d6 g1f3 g7g5": "Bird Opening: From's Gambit, Lasker Variation", "f2f4 e7e5 f4e5 d7d6 e5d6 f8d6 g1f3 g8h6 d2d4": "Bird Opening: From's Gambit, Lipke Variation", "f2f4 g7g5": "Bird Opening: Hobbs Gambit", "f2f4 h7h6 g1f3 g7g5": "Bird Opening: Hobbs-Zilbermints Gambit", "f2f4 g8h6": "Bird Opening: Horsefly Defense", "f2f4 e7e5 f4e5 f7f6": "Bird Opening: Lasker Gambit", "f2f4 g8f6 c2c4": "Bird Opening: Mujannah", "f2f4 b7b5": "Bird Opening: Myers Defense", "f2f4 e7e5 f4e5 g8e7": "Bird Opening: Platz Gambit", "f2f4 e7e5 f4e5 b8c6": "Bird Opening: Schlechter Gambit", "f2f4 e7e5 d2d4 e5d4 g1f3 c7c5 c2c3": "Bird Opening: Siegener Gambit", "f2f4 f7f5 e2e4 f5e4 b1c3 g8f6 g2g4": "Bird Opening: Swiss Gambit", "f2f4 f7f5 e2e4": "Bird Opening: Wagner-Zwitersch Gambit", "f2f4 d7d5": "Bird Opening: Dutch Variation", "f2f4 d7d5 g2g4": "Bird Opening: Dutch Variation, Dudweiler Gambit", "f2f4 d7d5 g1f3 g8f6 e2e3 c7c5": "Bird Opening: Lasker Variation", "f2f4 d7d5 c2c4": "Bird Opening: Sturm Gambit", "f2f4 d7d5 b2b3 g8f6 c1b2 d5d4 g1f3 c7c5 e2e3": "Bird Opening: Thomas Gambit", "f2f4 d7d5 e2e4": "Bird Opening: Williams Gambit", "f2f4 d7d5 e2e4 d5e4 b1c3 g8f6 d1e2": "Bird Opening: Williams Gambit", "f2f4 d7d5 e2e4 d5e4 b1c3 g8f6 g1e2": "Bird Opening: Williams-Zilbermints Gambit", "g1f3 c7c5 e2e3 g7g6 d2d4 f8g7 d4c5 d8a5": "Colle System: Rhamphorhynchus Variation", "g1f3 c7c5 c2c4 g7g6 d2d4 f8g7 e2e4 d8b6": "Modern Defense: Semi-Averbakh Variation, Polish Variation", "g1f3 c7c5 c2c4 g7g6 d2d4 f8g7 e2e4 d8a5": "Modern Defense: Semi-Averbakh Variation, Pterodactyl Variation", "g1f3 g7g6 d2d4 f8g7 e2e4 d7d6 c2c4 c7c5 d4c5 d8a5": "Modern Defense: Semi-Averbakh Variation, Pterodactyl Variation Accepted", "g1f3 g8h6 d2d4 g7g6": "Zukertort Defense: Kingside Variation", "g1f3 b8a6 e2e4 c7c5": "Zukertort Defense: Sicilian Knight Variation", "g1f3": "Zukertort Opening", "g1f3 f7f6": "Zukertort Opening: Arctic Defense", "g1f3 f7f6 e2e4 g8h6 d2d4 h6f7": "Zukertort Opening: Arctic Defense, Drunken Knight Variation", "g1f3 h7h6": "Zukertort Opening: Basman Defense", "g1f3 b8c6": "Zukertort Opening: Black Mustang Defense", "g1f3 b8a6 e2e4 g8h6": "Zukertort Opening: Drunken Cavalry Variation", "g1f3 f7f5": "Zukertort Opening: Dutch Variation", "g1f3 g7g5": "Zukertort Opening: Herrstrom Gambit", "g1f3 g7g6": "Zukertort Opening: Kingside Fianchetto", "g1f3 f7f5 e2e4": "Zukertort Opening: Lisitsyn Gambit", "g1f3 f7f5 d2d3 g8f6 e2e4": "Zukertort Opening: Lisitsyn Gambit Deferred", "g1f3 d7d6": "Zukertort Opening: Pirc Invitation", "g1f3 b7b5": "Zukertort Opening: Polish Defense", "g1f3 e7e6": "Zukertort Opening: Queen's Gambit Invitation", "g1f3 b7b6": "Zukertort Opening: Queenside Fianchetto Variation", "g1f3 e7e5": "Zukertort Opening: Ross Gambit", "g1f3 e7e6 c2c4 a7a6 b1c3 c7c5 g2g3 b7b5": "Zukertort Opening: Shabalov Gambit", "g1f3 c7c5": "Zukertort Opening: Sicilian Invitation", "g1f3 c7c6": "Zukertort Opening: Slav Invitation", "g1f3 c7c5 d2d4 c5d4 e2e3": "Zukertort Opening: Speelsmet Gambit", "g1f3 a7a6": "Zukertort Opening: St. George Defense", "g1f3 e7e5 f3e5 b8c6 e5c6 d7c6": "Zukertort Opening: The Walrus", "g1f3 d7d6 d2d4 e7e5": "Zukertort Opening: Vos Gambit", "g1f3 d7d6 e2e4 c8g4": "Zukertort Opening: Wade Defense", "g1f3 a7a5": "Zukertort Opening: Ware Defense", "g1f3 g8f6 g2g3 d7d5": "King's Indian Attack", "g1f3 g8f6 g2g3 g7g6 b2b4": "King's Indian Attack: Smyslov Variation", "g1f3 g8f6 g2g3 b7b5": "King's Indian Attack: Spassky Variation", "g1f3 g8f6 g2g3 g7g6": "King's Indian Attack: Symmetrical Defense", "g1f3 g8f6 g2g3 g7g6 f1g2 f8g7 e1g1 e8g8 d2d3 d7d5": "King's Indian Attack: Wahls Defense", "g1f3 g8f6 b2b4": "Polish Opening: Zukertort System", "g1f3 g8f6": "Zukertort Opening", "g1f3 g8f6 b1c3 b8c6": "Zukertort Opening", "g1f3 g8f6 g2g3 g7g6 b2b3 f8g7 c1b2 e8g8 f1g2 d7d6 e1g1": "Zukertort Opening: Double Fianchetto Attack", "g1f3 g8f6 e2e4": "Zukertort Opening: Lemberger Gambit", "g1f3 g8f6 a2a4 g7g6 b2b4": "Zukertort Opening: Myers Polish Attack", "g1f3 g8f6 b2b3": "Zukertort Opening: Nimzo-Larsen Variation", "g1f3 g8f6 e2e3": "Zukertort Opening: Quiet System", "g1f3 d7d5 b2b3": "Nimzo-Larsen Attack: Classical Variation", "g1f3 d7d5 b2b3 c7c5 e2e4": "Nimzo-Larsen Attack: Norfolk Gambit", "g1f3 d7d5 b2b3 g8f6 c1b2 c7c5 e2e4": "Nimzo-Larsen Attack: Norfolk Gambit", "g1f3 d7d5": "Zukertort Opening", "g1f3 d7d5 h1g1": "Zukertort Opening: Ampel Variation", "g1f3 d7d5 d2d3": "Zukertort Opening: Old Indian Attack", "g1f3 d7d5 e2e3 c7c5 c2c4 d5c4 b2b3": "Zukertort Opening: Pachman Gambit", "g1f3 d7d5 b2b3 c7c5 c2c4 d5c4 b1c3": "Zukertort Opening: Regina-Nu Gambit", "g1f3 d7d5 b1c3": "Zukertort Opening: Reversed Mexican Defense", "b2b4 d7d5 g1f3": "Zukertort Opening: Santasiere's Folly", "e2e4 d7d5 g1f3": "Zukertort Opening: Tennison Gambit", "g1f3 d7d5 a2a4": "Zukertort Opening: The Potato", "g2g3 d7d5 g1f3 g7g5": "Hungarian Opening: Wiedenhagen-Beta Gambit", "g1f3 d7d5 g2g3": "King's Indian Attack", "g1f3 d7d5 g2g3 g7g6": "King's Indian Attack: Double Fianchetto", "g1f3 d7d5 g2g3 c8g4": "King's Indian Attack: Keres Variation", "g1f3 d7d5 g2g3 c8g4 f1g2 b8d7": "King's Indian Attack: Keres Variation", "g1f3 d7d5 g2g3 e7e5": "King's Indian Attack: Omega-Delta Gambit", "g1f3 d7d5 g2g3 g7g6 f1g2 f8g7 e1g1 e7e5 d2d3 g8e7": "King's Indian Attack: Pachman System", "g1f3 d7d5 g2g3 c7c5": "King's Indian Attack: Sicilian Variation", "g1f3 g8f6 g2g3 d7d5 f1g2 c7c6 e1g1 c8g4": "King's Indian Attack: Yugoslav Variation", "g1f3 d7d5 g2g3 c7c5 f1g2 b8c6": "King's Indian Attack: French Variation", "e2e4 e7e6 d2d3 d7d5 b1d2 g8f6 g1f3 c7c5 g2g3 b8c6 f1g2 f8e7 e1g1 e8g8 f1e1": "King's Indian Attack: Sicilian Variation", "g1f3 d7d5 g2g3 c7c5 f1g2": "King's Indian Attack: Sicilian Variation", "g1f3 d7d5 g2g3 c7c5 f1g2 g8f6 e1g1 e7e6 d2d3": "King's Indian Attack: Sicilian Variation", "g1f3 d7d5 g2g3 c7c5 f1g2 b8c6 d2d4": "Zukertort Opening: Reversed Gr\u00fcnfeld", "g1f3 d7d5 g2g3 c7c5 f1g2 b8c6 d2d4 g8f6": "Zukertort Opening: Reversed Gr\u00fcnfeld", "g1f3 d7d5 g2g3 c7c5 f1g2 b8c6 d2d4 g8f6 e1g1": "Zukertort Opening: Reversed Gr\u00fcnfeld", "g1f3 d7d5 g2g3 c7c5 f1g2 b8c6 d2d4 e7e6 e1g1": "Zukertort Opening: Reversed Gr\u00fcnfeld", "g1f3 d7d5 c2c4": "R\u00e9ti Opening", "g1f3 d7d5 c2c4 d5d4": "R\u00e9ti Opening: Advance Variation", "g1f3 d7d5 c2c4 d5d4 b2b4 c7c5": "R\u00e9ti Opening: Advance Variation, Michel Gambit", "g1f3 d7d5 c2c4 d5d4 h1g1": "R\u00e9ti Opening: Penguin Variation", "g1f3 d7d5 c2c4 d5d4 e2e3 c7c5 b2b4": "R\u00e9ti Opening: Reversed Blumenfeld Gambit", "g1f3 d7d5 c2c4 d5c4": "R\u00e9ti Opening: R\u00e9ti Accepted", "g1f3 d7d5 c2c4 d5c4 e2e3 c8e6": "R\u00e9ti Opening: R\u00e9ti Gambit, Keres Variation", "g1f3 d7d5 c2c4 b7b5": "R\u00e9ti Opening: Zilbermints Gambit", "c2c4": "English Opening", "c2c4 g8f6 e2e4": "English Opening: Achilles-Omega Gambit", "c2c4 g7g6 e2e4 e7e5": "English Opening: Adorjan Defense", "c2c4 f7f5": "English Opening: Anglo-Dutch Defense", "c2c4 f7f5 e2e4": "English Opening: Anglo-Dutch Defense, Hickmann Gambit", "c2c4 f7f5 g1f3 d7d6 e2e4": "English Opening: Anglo-Dutch Variation, Chabanon Gambit", "c2c4 f7f5 b1c3 g8f6 e2e4": "English Opening: Anglo-Dutch Variation, Ferenc Gambit", "c2c4 b8c6": "English Opening: Anglo-Lithuanian Variation", "c2c4 d7d5": "English Opening: Anglo-Scandinavian Defense", "c2c4 d7d5 c4d5 e7e6": "English Opening: Anglo-Scandinavian Defense, L\u00f6hn Gambit", "c2c4 d7d5 c4d5 d8d5 b1c3 d5a5": "English Opening: Anglo-Scandinavian Defense, Malvinas Variation", "c2c4 d7d5 c4d5 g8f6": "English Opening: Anglo-Scandinavian Defense, Schulz Gambit", "c2c4 g7g6": "English Opening: Great Snake Variation", "c2c4 b7b5": "English Opening: Jaenisch Gambit", "c2c4 g7g6 b1c3 f8g7 g2g3 g8f6 f1g2 e8g8 e2e4 d7d6 g1e2 e7e5 e1g1 c7c6 d2d3 a7a6": "English Opening: King's English Variation, Botvinnik System, Prickly Pawn Pass System", "c2c4 g7g5": "English Opening: Myers Defense", "c2c4 g7g5 d2d4 f8g7": "English Opening: Myers Gambit", "c2c4 f7f5 b1c3 g8f6 e2e4 f5e4 g2g4": "English Opening: Porcupine Variation", "c2c4 f7f5 g2g4": "English Opening: Wade Gambit", "c2c4 g7g5 d2d4 e7e5": "English Opening: Zilbermints Gambit", "c2c4 c7c6": "English Opening: Caro-Kann Defensive System", "g1f3 d7d5 b2b3 g8f6 c1b2 g7g6 c2c4 c7c6": "R\u00e9ti Opening: Anglo-Slav Variation, Bled Variation", "g1f3 d7d5 c2c4 c7c6 b2b3": "R\u00e9ti Opening: Anglo-Slav Variation, Bogoljubow Variation", "g1f3 d7d5 c2c4 c7c6 b2b3 c8g4": "R\u00e9ti Opening: Anglo-Slav Variation, Bogoljubow Variation", "g1f3 g8f6 c2c4 c7c6 b2b3 d7d5 c1b2": "R\u00e9ti Opening: Anglo-Slav Variation, Bogoljubow Variation", "c2c4 g8f6 g1f3 c7c6 b2b3 d7d5 c1b2 c8g4": "R\u00e9ti Opening: Anglo-Slav Variation, Capablanca Variation", "c2c4 g8f6 g2g3 c7c6 g1f3 d7d5 b2b3 c8f5": "R\u00e9ti Opening: Anglo-Slav Variation, London Defensive System", "g1f3 g8f6 c2c4 c7c6 b2b3 d7d5 c1b2 c8f5": "R\u00e9ti Opening: Anglo-Slav Variation, New York System", "c2c4 g8f6 g2g3 c7c6 g1f3 d7d5 b2b3 c8g4": "R\u00e9ti Opening: Anglo-Slav Variation, Torre System", "c2c4 e7e6": "English Opening: Agincourt Defense", "c2c4 e7e6 g1f3": "English Opening: Agincourt Defense", "c2c4 e7e6 g1f3 d7d5": "English Opening: Agincourt Defense", "c2c4 e7e6 g1f3 d7d5 g2g3 g8f6 f1g2 f8d6": "English Opening: Agincourt Defense, Bogoljubow Defense", "c2c4 e7e6 g1f3 d7d5 g2g3 b7b6 f1g2 c8b7 e1g1": "English Opening: Agincourt Defense, Catalan Defense", "c2c4 e7e6 g1f3 d7d5 g2g3 c7c5": "English Opening: Agincourt Defense, Catalan Defense", "c2c4 e7e6 g1f3 g8f6 g2g3 d7d5 f1g2 d5c4": "English Opening: Agincourt Defense, Catalan Defense Accepted", "c2c4 e7e6 g1f3 g8f6 g2g3 d7d5 f1g2 c7c6": "English Opening: Agincourt Defense, Catalan Defense, Semi-Slav Defense", "c2c4 e7e6 g1f3 d7d5 g2g3 c7c6": "English Opening: Agincourt Defense, Kurajica Defense", "c2c4 e7e6 g1f3 d7d5 g2g3 g8f6 f1g2 c7c5 b2b3 b8c6 e1g1 f8e7": "English Opening: Agincourt Defense, Tarrasch Defense", "c2c4 e7e6 g1f3 g8f6 b2b3 d7d5 c1b2 c7c5 e2e3": "English Opening: Agincourt Defense, Wimpy System", "c2c4 e7e6 g1f3 d7d5 g2g3 g8f6": "English Opening: Neo-Catalan", "c2c4 e7e6 g1f3 d7d5 g2g3 g8f6 f1g2 f8e7": "English Opening: Neo-Catalan Declined", "c2c4 g8f6 g1f3 e7e6 g2g3 a7a6 f1g2 b7b5": "English Opening: Romanishin Gambit", "c2c4 e7e6 g1f3 d7d5 g2g3 g8f6 f1g2 f8e7 e1g1 c7c5 c4d5 f6d5 b1c3 b8c6": "English Opening: Agincourt Defense, Keres Defense", "c2c4 e7e6 g1f3 d7d5 g2g3 g8f6 f1g2 f8e7 e1g1": "English Opening: Agincourt Defense, Neo-Catalan Declined", "g1f3 d7d5 c2c4 e7e6 g2g3 g8f6 f1g2 f8e7 e1g1 e8g8 b2b3 c7c6 c1b2": "R\u00e9ti Opening: Anglo-Slav Variation, Bogoljubow Variation, Stonewall Line", "c2c4 g8f6": "English Opening: Anglo-Indian Defense", "c2c4 g8f6 b1c3 g7g6 g1f3 f8g7 e2e4": "English Opening: Anglo-Indian Defense, Anti-Anti-Gr\u00fcnfeld", "c2c4 g8f6 g1f3 g7g6 g2g3 d7d5": "English Opening: Anglo-Indian Defense, Gr\u00fcnfeld Formation", "c2c4 g8f6 g1f3 g7g6": "English Opening: Anglo-Indian Defense, King's Indian Formation", "c2c4 g8f6 g1f3 g7g6 g2g3 b7b6 f1g2 c8b7": "English Opening: Anglo-Indian Defense, King's Indian Formation, Double Fianchetto", "c2c4 g8f6 g1f3": "English Opening: Anglo-Indian Defense, King's Knight Variation", "c2c4 g8f6 g1f3 d7d6": "English Opening: Anglo-Indian Defense, Old Indian Formation", "c2c4 g8f6 g1f3 b7b6": "English Opening: Anglo-Indian Defense, Queen's Indian Formation", "c2c4 e7e6 g1f3 g8f6 g2g3 b7b6 f1g2 c8b7": "English Opening: Anglo-Indian Defense, Queen's Indian Formation", "c2c4 e7e6 g1f3 g8f6 g2g3 a7a6": "English Opening: Anglo-Indian Defense, Romanishin Variation", "c2c4 g8f6 g1f3 d7d5": "English Opening: Anglo-Indian Defense, Scandinavian Defense", "c2c4 g8f6 g1f3 d7d5 c4d5 f6d5": "English Opening: Anglo-Indian Defense, Scandinavian Defense, Exchange Variation", "c2c4 g8f6 g1f3 g7g6 g2g3 c7c6": "English Opening: Anglo-Indian Defense, Slav Formation", "c2c4 g8f6 b2b4": "English Orangutan", "c2c4 g8f6 b1c3 d7d5": "English Opening: Anglo-Gr\u00fcnfeld Defense", "c2c4 g8f6 b1c3 d7d5 c4d5 f6d5 g1f3 g7g6 g2g3 f8g7 f1g2 e7e5": "English Opening: Anglo-Gr\u00fcnfeld Defense, Korchnoi Variation", "c2c4 g8f6 b1c3 d7d5 c4d5 f6d5 g1f3": "English Opening: Anglo-Indian Defense, Anglo-Gr\u00fcnfeld Variation", "c2c4 g8f6 b1c3 d7d5 c4d5 f6d5 g1f3 g7g6": "English Opening: Anglo-Indian Defense, Anglo-Gr\u00fcnfeld Variation", "c2c4 g8f6 b1c3 d7d5 c4d5 f6d5 g2g3 g7g6 f1g2 d5b6": "English Opening: Anglo-Indian Defense, Anglo-Gr\u00fcnfeld Variation", "c2c4 g8f6 b1c3 d7d5 c4d5 f6d5 g2g3 g7g6 f1g2 d5c3": "English Opening: Anglo-Indian Defense, Anglo-Gr\u00fcnfeld Variation", "c2c4 g8f6 b1c3": "English Opening: Anglo-Indian Defense, Queen's Knight Variation", "c2c4 g8f6 b1c3 e7e6": "English Opening: Anglo-Indian Defense, Hedgehog System", "c2c4 g8f6 b1c3 e7e6 g1f3 f8b4": "English Opening: Anglo-Indian Defense, Nimzo-English", "c2c4 e7e6 b1c3 g8f6 g1f3 b7b6": "English Opening: Anglo-Indian Defense, Queen's Indian Formation", "c2c4 e7e6 b1c3 g8f6 g1f3 b7b6 e2e4 c8b7 f1d3": "English Opening: Anglo-Indian Defense, Queen's Indian Variation", "c2c4 e7e6 b1c3 g8f6 g1f3 f8b4 g2g4": "English Opening: Anglo-Indian Defense, Zvjaginsev-Krasenkow Attack", "c2c4 e7e6 b1c3 g8f6 e2e4": "English Opening: Mikenas-Carls Variation", "c2c4 e7e6 b1c3 g8f6 e2e4 b8c6": "English Opening: Mikenas-Carls Variation", "c2c4 e7e6 b1c3 g8f6 e2e4 d7d5 e4e5": "English Opening: Mikenas-Carls Variation", "c2c4 e7e6 b1c3 g8f6 e2e4 c7c5 e4e5 f6g8": "English Opening: Anglo-Indian Defense, Flohr-Mikenas-Carls Variation, Nei Gambit", "c2c4 e7e6 b1c3 g8f6 e2e4 c7c5": "English Opening: Mikenas-Carls, Sicilian", "c2c4 e7e5 g2g3 h7h5": "English Opening: Drill Variation", "c2c4 e7e5": "English Opening: King's English Variation", "c2c4 e7e5 e2e3 g8f6 f2f4 e5f4 g1f3": "English Opening: King's English Variation, Kahiko-Hula Gambit", "c2c4 e7e5 g1f3": "English Opening: King's English Variation, Nimzowitsch Variation", "c2c4 e7e5 g1f3 e5e4": "English Opening: King's English Variation, Nimzowitsch-Flohr Variation", "c2c4 e7e5 b1c3 d7d6 g1f3": "English Opening: King's English Variation", "c2c4 e7e5 b1c3 d7d6 g2g3 c7c6": "English Opening: King's English Variation, Keres Defense", "c2c4 e7e5 b1c3 f8b4": "English Opening: King's English Variation, Kramnik-Shirov Counterattack", "c2c4 e7e5 b1c3": "English Opening: King's English Variation, Reversed Sicilian", "c2c4 e7e5 b1c3 d7d6 g1f3 c8g4": "English Opening: King's English Variation, Smyslov Defense", "c2c4 e7e5 b1c3 b8c6 g2g3 d7d6 f1g2 c8e6": "English Opening: King's English Variation, Troger Defense", "c2c4 e7e5 b1c3 g8f6 g2g3": "English Opening: Carls-Bremen System", "c2c4 e7e5 b1c3 g8f6 g1f3 e5e4 f3g5 c7c6": "English Opening: King's English Variation, Adhiban Gambit", "c2c4 e7e5 b1c3 g8f6 g1f3 e5e4 f3g5 b7b5": "English Opening: King's English Variation, Bellon Gambit", "c2c4 e7e5 b1c3 g8f6": "English Opening: King's English Variation, Two Knights Variation", "c2c4 e7e5 b1c3 g8f6 g2g3 d7d5": "English Opening: King's English Variation, Two Knights Variation, Reversed Dragon", "c2c4 e7e5 b1c3 g8f6 g2g3 f8b4": "English Opening: King's English Variation, Two Knights Variation, Smyslov System", "c2c4 e7e5 b1c3 g8f6 g1f3 e5e4 f3g5 f6g4": "English Opening: King's English, Erbenheimer Gambit", "c2c4 e7e5 b1c3 g8f6 f2f4": "English Opening: King's English, Mazedonisch", "c2c4 e7e5 b1c3 g8f6 g2g3 c7c6": "English Opening: King's English Variation, Two Knights Variation, Keres Variation", "c2c4 e7e5 b1c3 g8f6 g2g3 f8c5 f1g2 c7c6": "English Opening: King's English Variation, Two Knights Variation, Keres Variation", "c2c4 e7e5 b1c3 g8f6 g2g3 g7g6": "English Opening: King's English Variation, Two Knights Variation, Fianchetto Line", "c2c4 e7e5 b1c3 b8c6 g2g3 g7g6 a1b1 g8h6 f1g2 f8g7": "English Opening: Closed, Taimanov Variation", "c2c4 e7e5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 e2e3 d7d6 g1e2 g8h6": "English Opening: Closed, Taimanov Variation", "c2c4 e7e5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 e2e3 d7d6 g1e2 c8e6": "English Opening: King's English Variation, Bremen-Hort Variation", "c2c4 e7e5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3": "English Opening: King's English Variation, Closed System", "c2c4 e7e5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 a1b1": "English Opening: King's English Variation, Hungarian Attack", "c2c4 e7e5 b1c3 b8c6": "English Opening: King's English Variation, Reversed Closed Sicilian", "c2c4 e7e5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7": "English Opening: King's English Variation, Taimanov Variation", "c2c4 e7e5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 d7d6 e2e4": "English Opening: King's English Variation, Botvinnik System", "c2c4 e7e5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 d7d6": "English Opening: King's English Variation, Closed System, Full Symmetry", "c2c4 e7e5 b1c3 b8c6 g1f3": "English Opening: King's English Variation, Three Knights System", "c2c4 e7e5 b1c3 g8f6 g1f3 b8c6 e2e4": "English Opening: Four Knights System, Nimzowitsch Variation", "c2c4 e7e5 b1c3 g8f6 g1f3 b8c6": "English Opening: King's English Variation, Four Knights Variation", "c2c4 e7e5 b1c3 g8f6 g1f3 b8c6 d2d4 e5d4 f3d4 f8b4 c1g5 h7h6 g5h4 b4c3 b2c3 c6e5": "English Opening: King's English Variation, Four Knights Variation", "c2c4 e7e5 b1c3 g8f6 g1f3 b8c6 d2d4 e5e4": "English Opening: King's English Variation, Four Knights Variation, Bradley Beach Variation", "c2c4 e7e5 b1c3 g8f6 g1f3 b8c6 d2d3": "English Opening: King's English Variation, Four Knights Variation, Flexible Line", "c2c4 e7e5 b1c3 g8f6 g1f3 b8c6 a2a3": "English Opening: King's English Variation, Four Knights Variation, Korchnoi Line", "c2c4 e7e5 b1c3 g8f6 g1f3 b8c6 e2e3": "English Opening: King's English Variation, Four Knights Variation, Quiet Line", "c2c4 e7e5 b1c3 g8f6 g1f3 b8c6 e2e3 f8b4 d1c2 b4c3": "English Opening: King's English Variation, Four Knights Variation, Quiet Line", "c2c4 e7e5 b1c3 g8f6 g1f3 b8c6 e2e3 f8b4 d1c2 e8g8 c3d5 f8e8 c2f5": "English Opening: King's English Variation, Four Knights Variation, Quiet Line", "c2c4 e7e5 b1c3 g8f6 g1f3 b8c6 g2g3": "English Opening: King's English Variation, Four Knights Variation, Fianchetto Line", "c2c4 e7e5 g2g3 g8f6 f1g2 d7d5 c4d5 f6d5 g1f3 b8c6": "English Opening: King's English Variation, Four Knights Variation, Fianchetto Line", "c2c4 e7e5 g2g3 g8f6 f1g2 d7d5 c4d5 f6d5 g1f3 b8c6 d2d3": "English Opening: King's English Variation, Four Knights Variation, Fianchetto Line", "c2c4 e7e5 g2g3 g8f6 f1g2 d7d5 c4d5 f6d5 g1f3 b8c6 d2d3 f8e7 e1g1 e8g8": "English Opening: King's English Variation, Four Knights Variation, Fianchetto Line", "c2c4 e7e5 b1c3 g8f6 g1f3 b8c6 g2g3 d7d5 c4d5 f6d5 f1g2 f8c5": "English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with Bc5", "c2c4 e7e5 b1c3 g8f6 g1f3 b8c6 g2g3 d7d5 c4d5 f6d5 f1g2 d5b6": "English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with Nb6", "c2c4 c7c5": "English Opening: Symmetrical Variation", "c2c4 c7c5 g1f3": "English Opening: Symmetrical Variation", "c2c4 e7e6 g1f3 g8f6 b1c3 c7c5 g2g3 b7b6 f1g2 c8b7 e1g1 f8e7": "English Opening: Symmetrical Variation, Hedgehog Defense", "c2c4 c7c5 g1f3 g8f6 b2b4": "English Opening: Symmetrical Variation, Napolitano Gambit", "c2c4 e7e6 g1f3 c7c5 b1c3 g8f6 g2g3 b7b6 f1g2 c8b7 e1g1 f8e7 d2d4 c5d4 d1d4 d7d6 f1d1 a7a6 b2b3 b8d7": "English Opening: Symmetrical, Hedgehog, Flexible Formation", "c2c4 c7c5 b2b4": "English Opening: Wing Gambit", "c2c4 g8f6 d2d4 c7c5 g1f3": "English Opening: Symmetrical Variation, Anti-Benoni Variation", "c2c4 e7e6 d2d4 c7c5 g1f3 c5d4 f3d4 g8f6": "English Opening: Symmetrical Variation, Anti-Benoni Variation, Spielmann Defense", "c2c4 e7e6 g1f3 g8f6 b1c3 c7c5 d2d4 b8c6 g2g3 c5d4 f3d4 d8b6": "English Opening: Symmetrical Variation, Anti-Benoni Variation, Geller Variation", "c2c4 e7e6 g1f3 g8f6 b1c3 c7c5 d2d4 c5d4 f3d4 b8c6": "English Opening: Symmetrical Variation, Anti-Benoni Variation, Spielmann Defense", "c2c4 g8f6 b1c3 c7c5 g2g3": "English Opening: Symmetrical Variation, Fianchetto Variation", "c2c4 c7c5 b1c3": "English Opening: Symmetrical Variation, Normal Variation", "c2c4 g8f6 b1c3 c7c5 g2g3 d7d5 c4d5 f6d5 f1g2 d5c7": "English Opening: Symmetrical Variation, Rubinstein Variation", "c2c4 c7c5 b1c3 g8f6 g1f3": "English Opening: Symmetrical Variation, Three Knights Variation", "c2c4 g8f6 g1f3 c7c5 b1c3 b8c6": "English Opening: Symmetrical Variation, Four Knights Variation", "c2c4 c7c5 b1c3 b8c6": "English Opening: Symmetrical Variation, Two Knights Variation", "c2c4 c7c5 e2e4 b8c6 b1c3 g7g6 g2g3 f8g7 f1g2": "English Opening: Symmetrical Variation, Botvinnik System", "c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 e2e3 e7e5": "English Opening: Symmetrical Variation, Botvinnik System Reversed, with e3", "c2c4 c7c5 b1c3 b8c6 g2g3": "English Opening: Symmetrical Variation, Two Knights, Fianchetto Variation", "c2c4 c7c5 g2g3 g7g6 f1g2 f8g7 b1c3 b8c6": "English Opening: Symmetrical Variation, Ultra-Symmetrical Variation", "c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 g1f3 e7e5": "English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3", "c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 g1f3": "English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation", "c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 g1f3 g8f6 e1g1 e8g8 b2b3": "English Opening: Symmetrical Variation, Double Fianchetto", "c2c4 g8f6 g1f3 g7g6 g2g3 f8g7 f1g2 e8g8 e1g1 c7c5 b1c3 b8c6 d2d3": "English Opening: Symmetrical Variation, Duchamp Variation", "c2c4 g8f6 g1f3 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7": "English Opening: Symmetrical Variation, Full Symmetry Line", "c2c4 g8f6 g1f3 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 e1g1 e8g8 d2d4": "English Opening: Symmetrical Variation, Mecking Variation", "d2d4 b8a6": "Australian Defense", "d2d4 e7e6 c2c4 c7c5 d4d5 e6d5 c4d5 d7d6 b1c3 g7g6 e2e4 f8g7 g1f3 g8e7": "Benoni Defense: Franco-Sicilian Hybrid", "d2d4 g7g5": "Borg Defense: Borg Gambit", "d2d4 g7g6 g1f3 f8g7 e2e3 c7c5 f1d3 d8a5": "Colle System: Pterodactyl Variation", "d2d4 g7g6 g1f3 f8g7 e2e3 c7c5 f1d3 c5d4 f3d4 d8a5": "Colle System: Siroccopteryx Variation", "d2d4 b7b6": "English Defense", "d2d4 e7e6 c2c4 b7b6": "English Defense", "d2d4 b7b6 c2c4 c8b7 b1c3 e7e5": "English Defense: Eastbourne Gambit", "c2c4 e7e6 d2d4 b7b6 b1c3 c8b7 e2e4 f7f5 e4f5 g8f6": "English Defense: Hartlaub Gambit Accepted", "c2c4 e7e6 d2d4 b7b6 b1c3 c8b7 e2e4 f7f5 d4d5": "English Defense: Hartlaub Gambit Declined", "d2d4 e7e6 c2c4 b7b6 e2e4 c8b7 f1d3 b8c6": "English Defense: Perrin Variation", "d2d4 e7e6 c2c4 b7b6 e2e4 c8b7 f2f3 f7f5 e4f5 g8h6": "English Defense: Poli Gambit", "d2d4 e7e5": "Englund Gambit", "d2d4 e7e5 d4d5": "Englund Gambit Complex Declined", "d2d4 e7e5 d4d5 f8c5 e2e4 d8h4": "Englund Gambit Complex Declined: Diemer Counterattack", "d2d4 e7e5 d4e5 b8c6 g1f3 d8e7": "Englund Gambit Complex: Englund Gambit", "d2d4 e7e5 d4e5 b8c6 g1f3 f8c5": "Englund Gambit Complex: Felbecker Gambit", "d2d4 e7e5 d4e5 d7d6": "Englund Gambit Complex: Hartlaub-Charlick Gambit", "d2d4 e7e5 d4e5 d8h4": "Englund Gambit Complex: Mosquito Gambit", "d2d4 e7e5 d4e5 f7f6": "Englund Gambit Complex: Soller Gambit", "d2d4 e7e5 d4e5 b8c6 g1f3 f7f6": "Englund Gambit Complex: Soller Gambit Deferred", "d2d4 e7e5 d4e5 b8c6 g1f3 d8e7 d1d5": "Englund Gambit Complex: Stockholm Variation", "d2d4 e7e5 d4e5 b8c6 g1f3 g8e7": "Englund Gambit Complex: Zilbermints Gambit", "d2d4 e7e5 g1f3": "Englund Gambit Declined: Reversed Alekhine", "d2d4 e7e5 g1f3 e5e4 f3g1": "Englund Gambit Declined: Reversed Brooklyn", "d2d4 e7e5 e2e3": "Englund Gambit Declined: Reversed French", "d2d4 e7e5 g1f3 e5e4": "Englund Gambit Declined: Reversed Krebs", "d2d4 e7e5 g1f3 e5e4 f3e5": "Englund Gambit Declined: Reversed Mokele Mbembe", "d2d4 e7e6": "Horwitz Defense", "d2d4 e7e6 c2c4 e6e5": "Horwitz Defense: Zilbermints Gambit", "d2d4 e7e6 c2c4 f8b4": "Kangaroo Defense", "d2d4 e7e6 c2c4 f8b4 b1c3": "Kangaroo Defense: Keres Defense, Transpositional Variation", "d2d4 b8c6": "Mikenas Defense", "d2d4 b8c6 c2c4 e7e5 d4d5 c6d4": "Mikenas Defense: Cannstatter Variation", "d2d4 b8c6 c2c4 e7e5 d4d5 c6e7": "Mikenas Defense: Lithuanian Variation", "d2d4 b8c6 c2c4 e7e5 d4e5 c6e5 b1c3 e5c4": "Mikenas Defense: Pozarek Gambit", "d2d4 g7g6 c2c4 f8g7 b1c3 c7c5 d4d5 g7c3 b2c3 f7f5": "Modern Defense: Beefeater Variation", "d2d4 g7g6 h2h4 g8f6 h4h5": "Modern Defense: Lizard Defense, Pirc-Diemer Gambit", "d2d4 b8c6 d4d5 c6b8": "Montevideo Defense", "d2d4 b7b5": "Polish Defense", "d2d4 b7b5 e2e4 c8b7 f1b5": "Polish Defense: Spassky Gambit Accepted", "d2d4 g7g6 c2c4 f8g7 b1c3 c7c5 d4d5 d7d6 e2e4 g7c3 b2c3 d8a5": "Pterodactyl Defense: Central, Benoni Beefeater Pterodactyl", "d2d4 g7g6 c2c4 f8g7 e2e4 c7c5 d4d5 d8a5": "Pterodactyl Defense: Central, Benoni Pterodactyl", "d2d4 g7g6 c2c4 f8g7 b1c3 c7c5 d4d5 d8a5": "Pterodactyl Defense: Fianchetto, Queen Benoni Pterodactyl", "d2d4 g7g6 c2c4 f8g7 b1c3 c7c5 d4d5 g7c3 b2c3 d8a5": "Pterodactyl Defense: Fianchetto, Queen Pteranodon", "d2d4 g7g6 g1f3 f8g7 g2g3 c7c5 f1g2 d8a5": "Pterodactyl Defense: Fianchetto, Queen Pterodactyl", "d2d4 g7g6 c2c4 f8g7 b1c3 c7c5 e2e3": "Pterodactyl Defense: Queen Pterodactyl, Quiet Line", "d2d4": "Queen's Pawn Game", "d2d4 c7c6 c2c4 d7d6": "Queen's Pawn Game: Anglo-Slav Opening", "d2d4 g7g6": "Queen's Pawn Game: Modern Defense", "d2d4 c7c6 g1f3 g8f6 c2c4 b7b5": "Slav Indian: Kudischewitsch Gambit", "d2d4 b8c6 d4d5 c6b8 e2e4 g8f6 e4e5 f6g8": "Zaire Defense", "d2d4 g7g6 c2c4 f8g7 b1c3 d7d6": "Modern Defense", "d2d4 g7g6 c2c4 f8g7 e2e4 e7e5": "Modern Defense: Neo-Modern Defense", "d2d4 d7d6 c2c4": "Old Indian Defense", "d2d4 d7d6": "Queen's Pawn Game", "d2d4 d7d6 c2c4 e7e5": "Rat Defense: English Rat", "d2d4 d7d6 c2c4 e7e5 d4e5 b8c6": "Rat Defense: English Rat, Lisbon Gambit", "d2d4 d7d6 c2c4 e7e5 d4e5 c8e6": "Rat Defense: English Rat, Pounds Gambit", "d2d4 d7d6 g1f3 g7g6 c2c4 f8g7 e2e4 c8g4": "Robatsch Defense", "d2d4 d7d6 g1f3 c8g4": "Wade Defense", "d2d4 d7d6 g1f3 c8g4 c2c4 b8d7 d1b3 a8b8": "Zukertort Opening: Wade Defense, Chigorin Plan", "d2d4 g7g6 c2c4 f8g7 b1c3 d7d6 e2e4": "Modern Defense: Averbakh System", "d2d4 g7g6 c2c4 f8g7 e2e4 d7d6 c1e3 g8f6 f2f3": "Modern Defense: Averbakh Variation, Pseudo-S\u00e4misch", "d2d4 g7g6 c2c4 f8g7 b1c3 d7d6 e2e4 b8c6": "Modern Defense: Kotov Variation", "d2d4 g7g6 c2c4 f8g7 b1c3 d7d6 e2e4 f7f5": "Modern Defense: Randspringer Variation", "g1f3 c7c5 c2c4 g7g6 d2d4 f8g7 e2e4 d8a5 b1c3 d7d6": "Pterodactyl Defense", "d2d4 g7g6 c2c4 f8g7 e2e4 d7d6 b1c3 c7c5 g1e2 d8a5": "Pterodactyl Defense: Central, Bogolubovia", "d2d4 c7c5 d4c5": "Benoni Defense: Benoni Gambit Accepted", "d2d4 c7c5 d4c5 b8a6": "Benoni Defense: Benoni Gambit, Schlenker Defense", "d2d4 c7c5 d4d5 g8f6": "Benoni Defense: Benoni-Indian Defense", "d2d4 g8f6 g1f3 c7c5 d4d5": "Benoni Defense: Benoni-Indian Defense, Kingside Move Order", "d2d4 c7c5 d4d5 f7f5 e2e4": "Benoni Defense: Benoni-Staunton Gambit", "d2d4 c7c5 d4c5 b7b6": "Benoni Defense: Cormorant Gambit", "e2e4 e7e6 d2d4 c7c5 d4d5": "Benoni Defense: French Benoni", "d2d4 g8f6 g1f3 c7c5 d4d5 c5c4": "Benoni Defense: Hawk Variation", "d2d4 c7c5": "Benoni Defense: Old Benoni", "d2d4 c7c5 d4d5": "Benoni Defense: Old Benoni", "d2d4 c7c5 d4d5 d7d6": "Benoni Defense: Old Benoni", "d2d4 c7c5 d4d5 f7f5": "Benoni Defense: Old Benoni, Mujannah Formation", "d2d4 c7c5 d4d5 d7d6 b1c3 g7g6": "Benoni Defense: Old Benoni, Schmid Variation", "d2d4 c7c5 d4d5 b8a6": "Benoni Defense: Snail Variation", "d2d4 c7c5 d4d5 g8f6 b1c3 d8a5": "Benoni Defense: Woozle", "d2d4 c7c5 b2b4": "Benoni Defense: Zilbermints-Benoni Gambit", "d2d4 c7c5 g1f3 c5d4 b2b4": "Benoni Defense: Zilbermints-Benoni Gambit", "d2d4 c7c5 g1f3 c5d4 b2b4 e7e5": "Benoni Defense: Zilbermints-Benoni Gambit, Tamarkin Countergambit", "d2d4 g8f6 g1f3 c7c5 d4d5 b7b5": "Indian Defense: Pseudo-Benko", "d2d4 c7c5 c2c4 c5d4 e2e3": "Queen's Pawn Game: Liedmann Gambit", "d2d4 c7c5 d4d5 e7e5": "Benoni Defense: Old Benoni", "d2d4 c7c5 d4d5 e7e5 e2e4 d7d6": "Benoni Defense: Semi-Benoni", "d2d4 g8f6 b1c3 d7d5 d1d3": "Amazon Attack: Siberian Attack", "d2d4 g8f6 f2f4": "Canard Opening", "d2d4 g8f6": "Indian Defense", "d2d4 g8f6 f2f3 d7d5 g2g4": "Indian Defense: Gedult Attack, Gedult Attack", "d2d4 g8f6 g2g4": "Indian Defense: Gibbins-Weidenhagen Gambit", "d2d4 g8f6 g2g4 f6g4": "Indian Defense: Gibbins-Weidenhagen Gambit Accepted", "d2d4 g8f6 g2g4 f6g4 f2f3 g4f6 e2e4": "Indian Defense: Gibbins-Weidenhagen Gambit, Maltese Falcon", "d2d4 g8f6 g2g4 e7e5": "Indian Defense: Gibbins-Weidenhagen Gambit, Oshima Defense", "d2d4 g8f6 g2g4 f6g4 e2e4 d7d6 f1e2 g4f6 b1c3": "Indian Defense: Gibbins-Weidenhagen Gambit, Stummer Gambit", "d2d4 g8f6 b1d2 e7e5": "Indian Defense: Lazard Gambit", "d2d4 g8f6 b1c3 e7e5": "Indian Defense: Maddigan Gambit", "d2d4 g8f6 e2e4": "Indian Defense: Omega Gambit", "d2d4 g8f6 e2e4 f6e4 f1d3 e4f6 c1g5": "Indian Defense: Omega Gambit, Arafat Gambit", "d2d4 g8f6 f2f3 d7d5 e2e4": "Indian Defense: Paleface Attack, Blackmar-Diemer Gambit Deferred", "d2d4 g8f6 d4d5": "Indian Defense: Pawn Push Variation", "d2d4 g8f6 b1c3 c7c5": "Indian Defense: Reversed Chigorin Defense", "d2d4 g8f6 g2g3": "Indian Defense: Tartakower Attack", "d2d4 g8f6 f2f3": "Paleface Attack", "d2d4 g8f6 b1c3 d7d5": "Queen's Pawn Game: Chigorin Variation", "d2d4 g8f6 f2f3 d7d5 b1c3": "Queen's Pawn Game: Veresov, Richter Attack", "d2d4 g8f6 c1g5": "Trompowsky Attack", "d2d4 g8f6 c1g5 f6e4 g5f4 g7g5": "Trompowsky Attack: Borg Variation", "d2d4 g8f6 c1g5 e7e6": "Trompowsky Attack: Classical Defense", "d2d4 g8f6 c1g5 e7e6 e2e4": "Trompowsky Attack: Classical Defense, Big Center Variation", "d2d4 g8f6 c1g5 f6e4 g5h4": "Trompowsky Attack: Edge Variation", "d2d4 g8f6 c1g5 f6e4 g5h4 c7c6 b1d2 d8a5 c2c3 e4d2 d1d2 d7d5 e2e4": "Trompowsky Attack: Edge Variation, Hergert Gambit", "d2d4 g8f6 c1g5 f6e4 g5h4 d7d5 f2f3 e4f6 b1c3 c8f5 e2e4": "Trompowsky Attack: Edge Variation, Hergert Gambit", "d2d4 g8f6 c1g5 c7c5 d4d5 d8b6 b1c3": "Trompowsky Attack: Poisoned Pawn Variation", "d2d4 g8f6 c1g5 f6e4 h2h4": "Trompowsky Attack: Raptor Variation", "d2d4 g8f6 c1g5 f6e4 h2h4 e4g5 h4g5 e7e5": "Trompowsky Attack: Raptor Variation, Hergert Gambit", "d2d4 g8f6 g1f3 f6e4": "D\u00f6ry Defense", "d2d4 g8f6 g1f3 c7c6": "Indian Defense: Czech-Indian", "d2d4 g8f6 g1f3": "Indian Defense: Knights Variation", "d2d4 g8f6 g1f3 a7a6": "Indian Defense: Knights Variation, Alburt-Miles Variation", "d2d4 g8f6 g1f3 e7e6 c1f4": "Indian Defense: London System", "d2d4 g8f6 g1f3 b7b5": "Indian Defense: Polish Variation", "d2d4 g8f6 g1f3 c7c5": "Indian Defense: Spielmann-Indian", "d2d4 g8f6 g1f3 d7d6": "Indian Defense: Wade-Tartakower Defense", "d2d4 g8f6 g1f3 e7e6 c1g5 d7d5 e2e3 c7c5 c2c3 d8b6": "Queen's Pawn Game: Torre Attack, Breyer Variation", "d2d4 g8f6 g1f3 e7e6 b1c3 d7d5 c1g5": "Queen's Pawn Game: Veresov Attack, Classical Defense", "d2d4 g8f6 g1f3 e7e6 c1g5": "Torre Attack: Classical Defense", "d2d4 g8f6 g1f3 e7e6 c1g5 h7h6": "Torre Attack: Classical Defense, Nimzowitsch Variation", "d2d4 g8f6 g1f3 e7e6 c1g5 c7c5 e2e3 b7b6 d4d5": "Torre Attack: Classical Defense, Petrosian Gambit", "d2d4 g8f6 g1f3 e7e6 c1g5 c7c5 e2e4": "Torre Attack: Wagner Gambit", "d2d4 g8f6 g1f3 e7e6 e2e3": "Yusupov-Rubinstein System", "d2d4 g8f6 g1f3 b7b6 c2c3 e7e5": "Indian Defense: Schnepper Gambit", "d2d4 g8f6 g1f3 b7b6 g2g3 c8b7 f1g2 c7c5": "Marienbad System", "d2d4 g8f6 g1f3 b7b6 g2g3 c8b7 f1g2 c7c5 c2c4 c5d4 d1d4": "Marienbad System: Berg Variation", "d2d4 g8f6 g1f3 b7b6": "Pseudo Queen's Indian Defense", "d2d4 g8f6 g1f3 g7g6": "East Indian Defense", "d2d4 g8f6 g1f3 g7g6 e2e3 f8g7 f1d3 d7d6": "Indian Defense: Colle System, King's Indian Variation", "d2d4 g8f6 g1f3 g7g6 c1f4": "London System", "d2d4 g8f6 g1f3 g7g6 b1c3 d7d5 c1f4": "Queen's Pawn Game: Barry Attack", "d2d4 g8f6 g1f3 g7g6 b1c3 d7d5 c1f4 f8g7": "Queen's Pawn Game: Barry Attack", "d2d4 g8f6 g1f3 g7g6 b1c3 d7d5 c1f4 f8g7 e2e3 e8g8 f1e2": "Queen's Pawn Game: Barry Attack, Gr\u00fcnfeld Variation", "d2d4 g8f6 g1f3 g7g6 b1c3 d7d5 c1f4 f8g7 d1d2": "Queen's Pawn Game: Barry Attack, Tarzan Attack", "d2d4 g8f6 g1f3 g7g6 c1g5 f8g7 b1d2 d7d5 e2e3 e8g8": "Queen's Pawn Game: Torre Attack, Gr\u00fcnfeld Variation, Main Line", "d2d4 g8f6 g1f3 g7g6 c1g5": "Torre Attack: Fianchetto Defense", "d2d4 g8f6 g1f3 g7g6 c1g5 f8g7 b1d2 c7c5": "Torre Attack: Fianchetto Defense, Euwe Variation", "d2d4 g8f6 g1f3 g7g6 g2g3": "Indian Defense: Przepiorka Variation", "d2d4 g8f6 c2c4 g7g5": "Indian Defense: Medusa Gambit", "d2d4 g8f6 c2c4": "Indian Defense: Normal Variation", "d2d4 g8f6 c2c4 b7b5": "Indian Defense: Pyrenees Gambit", "d2d4 g8f6 c2c4 b8c6": "Mexican Defense", "d2d4 g8f6 c2c4 b8c6 d4d5 c6e5 f2f4": "Mexican Defense: Horsefly Gambit", "d2d4 g8f6 c2c4 b7b6": "Queen's Indian Accelerated", "d2d4 g8f6 c2c4 c7c6": "Slav Indian", "d2d4 g8f6 c2c4 e7e5": "Indian Defense: Budapest Defense", "d2d4 g8f6 c2c4 e7e5 d4e5 f6e4 a2a3 b7b6": "Indian Defense: Budapest Defense, Fajarowicz Defense, Bonsdorf Variation", "d2d4 g8f6 c2c4 e7e5 d4e5 f6e4": "Indian Defense: Budapest Defense, Fajarowicz Variation", "d2d4 g8f6 c2c4 e7e5 d4e5 f6e4 d1c2": "Indian Defense: Budapest Defense, Fajarowicz-Steiner Variation", "d2d4 g8f6 c2c4 e7e5 d4e5 f6g4": "Indian Defense: Budapest Defense", "d2d4 g8f6 c2c4 e7e5 d4e5 f6g4 g1f3": "Indian Defense: Budapest Defense, Adler Variation", "d2d4 g8f6 c2c4 e7e5 d4e5 f6g4 e2e4": "Indian Defense: Budapest Defense, Alekhine Variation", "d2d4 g8f6 c2c4 e7e5 d4e5 f6g4 e2e4 g4e5 f2f4 e5c6": "Indian Defense: Budapest Defense, Alekhine Variation, Abonyi Variation", "d2d4 g8f6 c2c4 e7e5 d4e5 f6g4 e2e4 d7d6": "Indian Defense: Budapest Defense, Alekhine Variation, Tartakower Defense", "d2d4 g8f6 c2c4 e7e5 d4e5 f6g4 c1f4": "Indian Defense: Budapest Defense, Rubinstein Variation", "d2d4 g8f6 c2c4 d7d6": "Old Indian Defense", "d2d4 g8f6 c2c4 d7d6 g2g4": "Old Indian Defense: Aged Gibbon Gambit", "d2d4 g8f6 c2c4 d7d6 b1c3 c7c6": "Old Indian Defense: Czech Variation, with Nc3", "d2d4 g8f6 c2c4 d7d6 g1f3 c7c6": "Old Indian Defense: Czech Variation, with Nf3", "d2d4 g8f6 c2c4 d7d6 b1c3 c8f5": "Old Indian Defense: Janowski Variation", "d2d4 g8f6 c2c4 d7d6 b1c3 c8f5 g2g3": "Old Indian Defense: Janowski Variation, Fianchetto Variation", "d2d4 g8f6 c2c4 d7d6 b1c3 c8f5 e2e4": "Old Indian Defense: Janowski Variation, Grinberg Gambit", "d2d4 g8f6 c2c4 d7d6 b1c3 c8f5 f2f3": "Old Indian Defense: Janowski Variation, Main Line", "d2d4 g8f6 c2c4 d7d6 b1c3 e7e5 e2e3 b8d7 f1d3": "Old Indian Defense: Duz-Khotimirsky Variation", "d2d4 g8f6 c2c4 d7d6 g1f3 c8g4": "Old Indian Defense: Tartakower-Indian", "d2d4 g8f6 c2c4 d7d6 b1c3 e7e5 g1f3": "Old Indian Defense: Two Knights Variation", "d2d4 g8f6 c2c4 d7d6 b1c3 e7e5": "Old Indian Defense: Ukrainian Variation", "d2d4 g8f6 c2c4 d7d6 b1c3 b8d7 e2e4 e7e5 g1f3": "Old Indian Defense: Normal Variation", "d2d4 g8f6 c2c4 c7c5": "Benoni Defense", "d2d4 g8f6 c2c4 c7c5 d4d5 e7e5": "Benoni Defense: Czech Benoni Defense", "d2d4 g8f6 c2c4 c7c5 d4d5 d7d6": "Benoni Defense: Hrom\u00e1dka System", "d2d4 g8f6 c2c4 c7c5 d4d5 e7e5 b1c3 d7d6 e2e4 g7g6": "Benoni Defense: King's Indian System", "d2d4 g8f6 c2c4 c7c5 d4c5 e7e6": "Benoni Defense: Weenink Variation", "d2d4 g8f6 c2c4 c7c5 e2e3 g7g6 b1c3 f8g7 g1f3 e8g8 f1e2 c5d4 e3d4 d7d5 e1g1 b8c6": "Gr\u00fcnfeld Defense: Three Knights Variation, Burille Variation, Reversed Tarrasch", "d2d4 g8f6 c2c4 c7c5 d4d5 f6e4": "Vulture Defense", "d2d4 g8f6 c2c4 c7c5 d4d5 b7b5": "Benko Gambit", "d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6": "Benko Gambit Accepted", "d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 f2f3": "Benko Gambit Accepted: Dlugy Variation", "d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 e2e3": "Benko Gambit Accepted: Modern Variation", "d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b5b6": "Benko Gambit Accepted: Pawn Return Variation", "d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c1g5": "Benko Gambit Declined: Bishop Attack", "d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 e2e4": "Benko Gambit Declined: Hj\u00f8rring Countergambit", "d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 g1f3": "Benko Gambit Declined: Main Line", "d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 f2f3": "Benko Gambit Declined: Pseudo-S\u00e4misch", "d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 b1d2": "Benko Gambit Declined: Quiet Line", "d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 a2a4": "Benko Gambit Declined: Sosonko Variation", "d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 g2g4": "Benko Gambit: Mutkin Countergambit", "d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b1c3 a6b5 e2e4 b5b4 c3b5 d7d6 f1c4": "Benko Gambit: Nescafe Frappe Attack", "d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b1c3": "Benko Gambit: Zaitsev System", "d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b1c3 a6b5 e2e4 b5b4 c3b5": "Benko Gambit: Zaitsev Variation, Nescafe Frappe Attack", "d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b5a6 g7g6 b1c3 c8a6 f2f4": "Benko Gambit Accepted: Central Storming Variation", "d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b5a6 g7g6 b1c3 c8a6 g2g3 d7d6 f1g2 f8g7 g1f3": "Benko Gambit Accepted: Fianchetto Variation", "d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b5a6": "Benko Gambit Accepted: Fully Accepted Variation", "d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b5a6 c8a6 b1c3 d7d6 g1f3 g7g6 g2g3": "Benko Gambit: Fianchetto Variation", "d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b5a6 c8a6 b1c3 d7d6 g1f3 g7g6 f3d2": "Benko Gambit: Nd2 Variation", "d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b5a6 g7g6 b1c3 c8a6 e2e4 a6f1 e1f1 d7d6 g2g3": "Benko Gambit", "d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b5a6 g7g6 b1c3 c8a6 g1f3 d7d6 e2e4 a6f1 e1f1 f8g7 g2g3 e8g8 f1g2": "Benko Gambit Accepted: King Walk Variation", "d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b5a6 c8a6 b1c3 d7d6 e2e4": "Benko Gambit Accepted: Yugoslav", "d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b5a6 g7g6 b1c3 c8a6 e2e4 a6f1 e1f1 d7d6 g1e2": "Benko Gambit Accepted: Yugoslav", "d2d4 g8f6 c2c4 c7c5 d4d5 e7e6": "Benoni Defense: Modern Variation", "d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 f8d6": "Benoni Defense: Modern Variation, Snake Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 c7c5 d4d5 e6d5 c4d5 d7d6 b1c3 g7g6": "Benoni Defense", "d2d4 g8f6 c2c4 e7e6 g1f3 c7c5 d4d5 e6d5 c4d5 d7d6 b1c3 g7g6 g2g3": "Benoni Defense: Fianchetto Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 c7c5 d4d5 e6d5 c4d5 d7d6 b1c3 g7g6 f3d2": "Benoni Defense: Knight's Tour Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 c7c5 d4d5 e6d5 c4d5 d7d6 b1c3 g7g6 c1g5": "Benoni Defense: Uhlmann Variation", "d2d4 g8f6 c2c4 e7e6 g2g3 c7c5 d4d5 e6d5 c4d5 d7d6 b1c3 g7g6 f1g2 f8g7 g1f3 e8g8": "Benoni Defense: Fianchetto Variation", "d2d4 g8f6 c2c4 e7e6 g2g3 c7c5 d4d5 e6d5 c4d5 d7d6 b1c3 g7g6 f1g2 f8g7 g1f3 e8g8 e1g1 b8d7": "Benoni Defense: Fianchetto Variation, Hastings Defense", "d2d4 g8f6 c2c4 e7e6 g2g3 c7c5 d4d5 e6d5 c4d5 d7d6 b1c3 g7g6 f1g2 f8g7 g1f3 e8g8 e1g1 a7a6 a2a4 b8d7 f3d2 f8e8": "Benoni Defense: Fianchetto Variation, Hastings Defense, Main Line", "d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4": "Benoni Defense: King's Pawn Line", "d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 f2f4 f8g7 e4e5": "Benoni Defense: Mikenas Variation", "d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 f2f4": "Benoni Defense: Pawn Storm Variation", "d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 f2f4 f8g7 f1b5": "Benoni Defense: Taimanov Variation", "d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 f2f4 f8g7 g1f3 e8g8": "Benoni Defense: Four Pawns Attack", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f4 e8g8 g1f3 c7c5 d4d5 e7e6 f1e2 e6d5 c4d5 f8e8": "Benoni Defense: Four Pawns Attack, Main Line", "d2d4 g8f6 c2c4 e7e6 g1f3 c7c5 d4d5 e6d5 c4d5 d7d6 b1c3 g7g6 e2e4": "Benoni Defense: Classical Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 c7c5 d4d5 e6d5 c4d5 d7d6 b1c3 g7g6 e2e4 f8g7 h2h3": "Benoni Defense: Classical Variation, New York Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 c7c5 d4d5 e6d5 c4d5 d7d6 b1c3 g7g6 e2e4 f8g7 f1e2": "Benoni Defense: Classical Variation, Traditional Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 c7c5 d4d5 e6d5 c4d5 d7d6 b1c3 g7g6 e2e4 f8g7 c1g5": "Benoni Defense: Classical Variation, Averbakh-Grivas Attack", "d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 f1e2 e8g8": "Benoni Defense: Classical Variation", "d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 f1e2 e8g8 e1g1": "Benoni Defense: Classical Variation, Main Line", "d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 f1e2 e8g8 e1g1 a7a6 a2a4": "Benoni Defense: Classical Variation, Full Line", "d2d4 g8f6 c2c4 e7e6 g1f3 c7c5 d4d5 e6d5 c4d5 d7d6 b1c3 g7g6 e2e4 f8g7 f1e2 e8g8 e1g1 a7a6 a2a4 c8g4": "Benoni Defense: Classical Variation, Argentine Counterattack", "d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 f1e2 e8g8 e1g1 f8e8": "Benoni Defense: Classical Variation, Czerniak Defense", "d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 f1e2 e8g8 e1g1 f8e8 f3d2": "Benoni Defense: Classical Variation, Czerniak Defense, Tal Line", "d2d4 g8f6 c2c4 e7e6 g1f3 c7c5 d4d5 e6d5 c4d5 d7d6 b1c3 g7g6 e2e4 f8g7 f1e2 e8g8 e1g1 f8e8 f3d2 b8a6": "Benoni Defense: Classical Variation, Czerniak Defense", "d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 f1e2 e8g8 e1g1 f8e8 f3d2 b8a6 f2f3": "Benoni Defense: Classical Variation, Czerniak Defense", "d2d4 f7f5": "Dutch Defense", "d2d4 f7f5 d1d3": "Dutch Defense: Alapin Variation", "d2d4 f7f5 g2g4 e7e5": "Dutch Defense: Hevendehl Gambit", "d2d4 f7f5 c1g5": "Dutch Defense: Hopton Attack", "d2d4 f7f5 h2h3 g8f6 g2g4": "Dutch Defense: Janzen-Korchnoi Gambit", "d2d4 f7f5 b1c3 d7d5 e2e4": "Dutch Defense: Kingfisher Gambit", "d2d4 f7f5 h2h3": "Dutch Defense: Korchnoi Attack", "d2d4 f7f5 g2g4": "Dutch Defense: Krejcik Gambit", "d2d4 f7f5 g2g4 f5g4 e2e4 d7d5 b1c3": "Dutch Defense: Krejcik Gambit, Tate Gambit", "d2d4 f7f5 d1d3 e7e6 g2g4": "Dutch Defense: Manhattan Gambit, Anti-Classical Line", "d2d4 f7f5 d1d3 g7g6 g2g4": "Dutch Defense: Manhattan Gambit, Anti-Leningrad", "d2d4 f7f5 d1d3 d7d6 g2g4": "Dutch Defense: Manhattan Gambit, Anti-Modern", "d2d4 f7f5 d1d3 d7d5 g2g4": "Dutch Defense: Manhattan Gambit, Anti-Stonewall", "d2d4 f7f5 g1f3 e7e5": "Dutch Defense: Omega-Isis Gambit", "d2d4 f7f5 b1c3": "Dutch Defense: Raphael Variation", "d2d4 f7f5 c1f4 e7e6 g2g4": "Dutch Defense: Senechaud Gambit", "d2d4 f7f5 b1c3 g8f6 g2g4": "Dutch Defense: Spielmann Gambit", "d2d4 f7f5 b1c3 d7d5": "Queen's Pawn Game: Veresov Attack, Dutch System", "d2d4 f7f5 g2g3 g8f6 f1g2 e7e6 g1h3": "Dutch Defense: Blackburne Variation", "d2d4 f7f5 g2g3": "Dutch Defense: Fianchetto Attack", "d2d4 f7f5 g2g3 g7g6 f1g2 f8g7 g1h3": "Dutch Defense: Leningrad Variation, Karlsbad Variation", "d2d4 f7f5 g2g3 c7c6 f1g2 g7g6 g1f3 f8g7 e1g1 g8h6": "Dutch Defense: Leningrad, Basman System", "d2d4 f7f5 g2g3 g8f6 f1g2 g7g6": "Dutch Defense: Semi-Leningrad Variation", "d2d4 f7f5 e2e4 f5e4 b1c3 g8f6 f2f3": "Dutch Defense: Blackmar's Second Gambit", "d2d4 f7f5 e2e4": "Dutch Defense: Staunton Gambit", "d2d4 f7f5 e2e4 f5e4": "Dutch Defense: Staunton Gambit Accepted", "d2d4 f7f5 e2e4 f5e4 b1d2": "Dutch Defense: Staunton Gambit, American Attack", "d2d4 f7f5 e2e4 f5e4 b1c3 g8f6 g2g4": "Dutch Defense: Staunton Gambit, Tartakower Variation", "e2e4 d7d6 d2d4 f7f5": "Rat Defense: Balogh Defense", "d2d4 f7f5 e2e4 f5e4 b1c3 g8f6 c1g5": "Dutch Defense: Staunton Gambit", "d2d4 f7f5 e2e4 f5e4 b1c3 g8f6 c1g5 g7g6 h2h4": "Dutch Defense: Staunton Gambit, Alekhine Variation", "d2d4 f7f5 e2e4 f5e4 b1c3 g8f6 c1g5 c7c6": "Dutch Defense: Staunton Gambit, Chigorin Variation", "d2d4 f7f5 e2e4 f5e4 b1c3 g8f6 c1g5 g7g6 f2f3": "Dutch Defense: Staunton Gambit, Lasker Variation", "d2d4 f7f5 e2e4 f5e4 b1c3 g8f6 c1g5 b7b6": "Dutch Defense: Staunton Gambit, Nimzowitsch Variation", "d2d4 f7f5 c2c4": "Dutch Defense", "d2d4 f7f5 c2c4 e7e6 e2e4": "Dutch Defense: Bellon Gambit", "d2d4 f7f5 c2c4 g7g6 b1c3 g8h6": "Dutch Defense: Bladel Variation", "d2d4 f7f5 c2c4 e7e6": "Dutch Defense: Classical Variation", "d2d4 f7f5 c2c4 g8f6 b1c3 d7d6 g1f3 b8c6": "Dutch Defense: Krause Variation", "d2d4 f7f5 c2c4 g8f6": "Dutch Defense: Normal Variation", "d2d4 f7f5 c2c4 e7e6 b1c3": "Dutch Defense: Rubinstein Variation", "d2d4 f7f5 c2c4 g8f6 b1c3": "Dutch Defense: Queen's Knight Variation", "d2d4 f7f5 c2c4 g8f6 g2g3": "Dutch Defense: Fianchetto Variation", "d2d4 f7f5 c2c4 g8f6 g2g3 d7d6 f1g2 c7c6 b1c3 d8c7": "Dutch Defense: Hort-Antoshin System", "d2d4 f7f5 c2c4 g8f6 g2g3 g7g6": "Dutch Defense: Leningrad Variation", "d2d4 f7f5 c2c4 g8f6 g2g3 g7g6 f1g2 f8g7 g1f3": "Dutch Defense: Leningrad Variation", "d2d4 f7f5 g2g3 g8f6 f1g2 g7g6 g1f3 f8g7 e1g1 e8g8 c2c4 d7d6 b1c3 c7c6": "Dutch Defense: Leningrad Variation, Warsaw Variation", "d2d4 f7f5 g2g3 g8f6 f1g2 g7g6 g1f3 f8g7 e1g1 e8g8 c2c4 d7d6 b1c3 b8c6": "Dutch Defense: Leningrad Variation, Matulovic Variation", "d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2": "Dutch Defense: Classical Variation", "d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 d7d5 g1f3": "Dutch Defense: Classical Variation", "d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8b4": "Dutch Defense: Nimzo-Dutch Variation", "d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8b4 c1d2 b4e7": "Dutch Defense: Nimzo-Dutch Variation, Alekhine Variation", "d2d4 f7f5 c2c4 e7e6 g1f3 g8f6 g2g3 c7c6 f1g2 d7d5 e1g1 f8d6": "Dutch Defense: Stonewall Variation, Modern Variation", "d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7": "Dutch Defense: Classical Variation", "d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1h3": "Dutch Defense: Classical Variation, Blackburne Attack", "d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 f6e4": "Dutch Defense: Alekhine Variation", "d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8": "Dutch Defense: Classical Variation", "d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d5 b1c3": "Dutch Defense: Stonewall Variation", "d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d5": "Dutch Defense: Stonewall Variation", "d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d5 b2b3": "Dutch Defense: Stonewall Variation, Botvinnik Variation", "d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d5 b2b3 c7c6 c1a3": "Dutch Defense: Stonewall Variation", "d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d5 b1c3 c7c6": "Dutch Defense: Stonewall Variation", "d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d5 b1c3 c7c6 d1c2 d8e8 c1g5": "Dutch Defense: Stonewall Variation, Chekhover Variation", "d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d6": "Dutch Defense: Classical Variation", "d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d6 b1c3 a7a5": "Dutch Defense: Classical Variation, Buenos Aires Variation", "d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d6 b1c3 f6e4": "Dutch Defense: Classical Variation, Huisl Variation", "d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d6 b1c3 d8e8": "Dutch Defense: Classical Variation, Ilyin-Zhenevsky Variation", "d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d6 b1c3 d8e8 f1e1": "Dutch Defense: Classical Variation, Ilyin-Zhenevsky Variation, Winter Variation", "d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d6 b1c3 d8e8 d1c2": "Dutch Defense: Classical Variation, Ilyin-Zhenevsky Variation, Alatortsev-Lisitsyn Line", "d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d6 b1c3 d8e8 b2b3": "Dutch Defense: Classical Variation, Ilyin-Zhenevsky Variation, Modern Main Line", "e2e4 f7f6": "Barnes Defense", "e2e4 g7g5": "Borg Defense", "e2e4 g7g5 d2d4 f8g7": "Borg Defense: Borg Gambit", "e2e4 g7g5 d2d4 h7h6 h2h4 g5g4": "Borg Defense: Troon Gambit", "e2e4 g7g5 d2d4 e7e5": "Borg Defense: Zilbermints Gambit", "e2e4 h7h6": "Carr Defense", "e2e4 h7h6 d2d4 e7e5": "Carr Defense: Zilbermints Gambit", "e2e4 f7f5": "Duras Gambit", "e2e4 f7f6 d2d4 e8f7": "Fried Fox Defense", "e2e4 h7h5": "Goldsmith Defense", "e2e4 h7h5 d2d4 g8f6": "Goldsmith Defense: Picklepuss Defense", "e2e4 b7b6 d2d4 c8a6": "Guatemala Defense", "e2e4 g8h6": "Hippopotamus Defense", "e2e4 g8h6 d2d4 g7g6 c2c4 f7f6": "Hippopotamus Defense", "e2e4": "King's Pawn Game", "e2e4 b8a6": "Lemming Defense", "e2e4 d7d6 d2d4 g8f6 f2f3": "Lion Defense: Lion's Jaw", "e2e4 b8c6": "Nimzowitsch Defense", "e2e4 b8c6 d2d4": "Nimzowitsch Defense", "e2e4 b8c6 b1c3 g8f6 d2d4 e7e5": "Nimzowitsch Defense: Breyer Variation", "e2e4 b8c6 g1f3 f7f5": "Nimzowitsch Defense: Colorado Countergambit", "e2e4 b8c6 g1f3 f7f5 e4f5": "Nimzowitsch Defense: Colorado Countergambit Accepted", "e2e4 b8c6 g1f3": "Nimzowitsch Defense: Declined Variation", "e2e4 b8c6 g1f3 g8f6 e4e5 f6g4": "Nimzowitsch Defense: El Columpio Defense", "e2e4 b8c6 g1f3 g8f6 e4e5 f6g4 d2d4 d7d6 h2h3 g4h6 e5e6": "Nimzowitsch Defense: El Columpio Defense, El Columpio Gambit", "e2e4 b8c6 g1f3 g8f6 e4e5 f6g4 d2d4 d7d6 h2h3 g4h6 e5d6": "Nimzowitsch Defense: El Columpio Defense, Exchange Variation", "e2e4 b8c6 g1f3 g8f6 e4e5 f6g4 d2d4 d7d6 h2h3 g4h6 f1b5": "Nimzowitsch Defense: El Columpio Defense, Pin Variation", "e2e4 b8c6 g1f3 e7e6": "Nimzowitsch Defense: Franco-Nimzowitsch Variation", "e2e4 b8c6 b1c3 e7e6": "Nimzowitsch Defense: French Connection", "e2e4 b8c6 d2d4 d7d5 c1e3": "Nimzowitsch Defense: Hornung Gambit", "e2e4 b8c6 d2d4 e7e5": "Nimzowitsch Defense: Kennedy Variation", "e2e4 b8c6 d2d4 e7e5 d4e5 f8c5": "Nimzowitsch Defense: Kennedy Variation, Bielefelder Gambit", "e2e4 b8c6 d2d4 e7e5 d4e5 f7f6": "Nimzowitsch Defense: Kennedy Variation, Hammer Gambit", "e2e4 b8c6 d2d4 e7e5 d4e5 d8h4": "Nimzowitsch Defense: Kennedy Variation, Herford Gambit", "e2e4 b8c6 d2d4 e7e5 d4e5 c6e5 b1c3": "Nimzowitsch Defense: Kennedy Variation, Keres Attack", "e2e4 b8c6 d2d4 e7e5 d4d5": "Nimzowitsch Defense: Kennedy Variation, Linksspringer Variation", "e2e4 b8c6 d2d4 e7e5 d4e5 c6e5 f2f4 e5g6": "Nimzowitsch Defense: Kennedy Variation, Main Line", "e2e4 b8c6 d2d4 e7e5 d4e5 c6e5 g1f3": "Nimzowitsch Defense: Kennedy Variation, Paulsen Attack", "e2e4 b8c6 d2d4 e7e5 d4e5 c6e5 f2f4 e5c6": "Nimzowitsch Defense: Kennedy Variation, Riemann Defense", "e2e4 b8c6 d2d4 e7e5 d4e5 d7d6": "Nimzowitsch Defense: Kennedy Variation, de Smet Gambit", "e2e4 b8c6 d2d4 d7d6": "Nimzowitsch Defense: Mikenas Variation", "e2e4 b8c6 d2d4 f7f6": "Nimzowitsch Defense: Neo-Mongoloid Defense", "e2e4 b8c6 b1c3 g7g6": "Nimzowitsch Defense: Pirc Connection", "e2e4 b8c6 f1b5": "Nimzowitsch Defense: Pseudo-Spanish Variation", "e2e4 b8c6 d2d4 d7d5": "Nimzowitsch Defense: Scandinavian Variation", "e2e4 b8c6 d2d4 d7d5 e4d5 c6b4": "Nimzowitsch Defense: Scandinavian Variation, Aachen Gambit", "e2e4 b8c6 d2d4 d7d5 e4e5": "Nimzowitsch Defense: Scandinavian Variation, Advance Variation", "e2e4 b8c6 d2d4 d7d5 b1c3": "Nimzowitsch Defense: Scandinavian Variation, Bogoljubow Variation", "e2e4 b8c6 d2d4 d7d5 b1c3 d5e4": "Nimzowitsch Defense: Scandinavian Variation, Bogoljubow Variation", "e2e4 b8c6 d2d4 d7d5 b1c3 a7a6": "Nimzowitsch Defense: Scandinavian Variation, Bogoljubow Variation, Brandics Gambit", "e2e4 b8c6 d2d4 d7d5 b1c3 g7g6": "Nimzowitsch Defense: Scandinavian Variation, Bogoljubow Variation, Erben Gambit", "e2e4 b8c6 d2d4 d7d5 b1c3 e7e5": "Nimzowitsch Defense: Scandinavian Variation, Bogoljubow Variation, Heinola-Deppe Gambit", "e2e4 b8c6 d2d4 d7d5 b1c3 d5e4 d4d5 c6e5": "Nimzowitsch Defense: Scandinavian Variation, Bogoljubow Variation, Nimzowitsch Gambit", "e2e4 b8c6 d2d4 d7d5 b1c3 d5e4 d4d5 c6b8 f2f3": "Nimzowitsch Defense: Scandinavian Variation, Bogoljubow Variation, Richter Gambit", "e2e4 b8c6 d2d4 d7d5 b1c3 g8f6": "Nimzowitsch Defense: Scandinavian Variation, Bogoljubow Variation, Vehre Variation", "e2e4 b8c6 d2d4 d7d5 e4d5 d8d5": "Nimzowitsch Defense: Scandinavian Variation, Exchange Variation", "e2e4 b8c6 d2d4 d7d5 e4d5 d8d5 b1c3": "Nimzowitsch Defense: Scandinavian Variation, Exchange Variation, Marshall Gambit", "e2e4 b8c6 b2b4": "Nimzowitsch Defense: Wheeler Gambit", "e2e4 b8c6 g1f3 d7d6": "Nimzowitsch Defense: Williams Variation", "e2e4 b8c6 d2d4 a7a6": "Nimzowitsch Defense: Woodchuck Variation", "e2e4 b7b6": "Owen Defense", "e2e4 b7b6 d2d4 c7c5 d4c5 b8c6": "Owen Defense: Hekili-Loa Gambit", "e2e4 b7b6 d2d4 c8b7 f1d3 f7f5 e4f5 b7g2 d1h5 g7g6": "Owen Defense: Matovinsky Gambit", "e2e4 b7b6 d2d4 c8b7 c1g5": "Owen Defense: Naselwaus Gambit", "e2e4 b7b6 d2d4 c8b7 g1f3": "Owen Defense: Smith Gambit", "e2e4 f7f6 d2d4 b7b6 c2c4 c8b7": "Owen Defense: Unicorn Variation", "e2e4 b7b6 d2d4 c8b7 f2f3 e7e5": "Owen Defense: Wind Gambit", "e2e4 d7d6": "Pirc Defense", "e2e4 d7d6 d2d4": "Pirc Defense", "e2e4 d7d6 d2d4 g8f6": "Pirc Defense", "e2e4 d7d6 d2d4 g8f6 g1f3": "Pirc Defense: Roscher Gambit", "e2e4 d7d6 d2d4 b8d7": "Rat Defense: Antal Defense", "e2e4 d7d6 f2f4 d6d5 e4d5 g8f6": "Rat Defense: Fuller Gambit", "e2e4 d7d6 f2f4": "Rat Defense: Harmonist", "e2e4 d7d6 h2h4": "Rat Defense: Petruccioli Attack", "e2e4 d7d6 g2g4": "Rat Defense: Spike Attack", "e2e4 a7a6": "St. George Defense", "e2e4 a7a6 d2d4 b7b5 g1f3 c8b7 f1d3 e7e6": "St. George Defense: Polish Variation", "e2e4 a7a6 d2d4 b7b5 g1f3 c8b7 f1d3 d7d6 e1g1 g7g6 c2c3 f8g7": "St. George Defense: San Jorge Variation", "e2e4 a7a6 d2d4 e7e5": "St. George Defense: Zilbermints Gambit", "e2e4 b8c6 d2d4 d7d5 b1c3 d5e4 d4d5": "Van Geet Opening: Berlin Gambit", "e2e4 a7a5": "Ware Defense", "e2e4 a7a5 d2d4 b8c6": "Ware Defense: Snagglepuss Defense", "e2e4 d7d5": "Scandinavian Defense", "e2e4 d7d5 b2b3": "Scandinavian Defense", "e2e4 d7d5 e4d5 d8d5 b1c3 d5a5 d2d4 e7e5": "Scandinavian Defense: Anderssen Counterattack", "e2e4 d7d5 e4d5 d8d5 b1c3 d5a5 d2d4 e7e5 g1f3 c8g4": "Scandinavian Defense: Anderssen Counterattack, Collijn Variation", "e2e4 d7d5 e4d5 d8d5 b1c3 d5a5 d2d4 e7e5 g1f3": "Scandinavian Defense: Anderssen Counterattack, Goteborg System", "e2e4 d7d5 e4d5 d8d5 b1c3 d5a5 d2d4 e7e5 d4e5 b8c6 g1f3 f8b4 c1d2": "Scandinavian Defense: Anderssen Counterattack, Orthodox Attack", "e2e4 d7d5 e4d5 c7c6 d5c6 b8c6": "Scandinavian Defense: Blackburne Gambit", "e2e4 d7d5 e4d5 c7c6": "Scandinavian Defense: Blackburne-Kloosterboer Gambit", "e2e4 d7d5 e4d5 e7e5 d5e6 c8e6": "Scandinavian Defense: Boehnke Gambit", "e2e4 d7d5 e4d5 d8d5 b1c3 d5d6 d2d4 g8f6 g1f3 a7a6": "Scandinavian Defense: Bronstein Variation", "e2e4 d7d5 e4d5 d8d5 b1c3 d5a5 d2d4 g8f6 g1f3 c8f5": "Scandinavian Defense: Classical Variation", "e2e4 d7d5 e4d5 d8d5 b1c3 d5a5 d2d4 g8f6 g1f3 c8f5 f3e5 c7c6 g2g4": "Scandinavian Defense: Gr\u00fcnfeld Variation", "e2e4 d7d5 e4d5 d8d5 b1c3 d5d6": "Scandinavian Defense: Gubinsky-Melts Defense", "e2e4 d7d5 e4d5 g8f6 c2c4 e7e6": "Scandinavian Defense: Icelandic-Palme Gambit", "e2e4 d7d5 e4d5 g8f6 d2d4 f6d5 c2c4 d5b4": "Scandinavian Defense: Kiel Variation", "e2e4 d7d5 e4d5 c7c6 d5c6 e7e5": "Scandinavian Defense: Kloosterboer Gambit", "e2e4 d7d5 e4d5 g8f6 d2d4 c7c6 d5c6 e7e5": "Scandinavian Defense: K\u00e1das Gambit", "e2e4 d7d5 e4d5 d8d5 b1c3 d5a5 d2d4 g8f6 g1f3 c8g4 h2h3": "Scandinavian Defense: Lasker Variation", "e2e4 d7d5 e4d5 d8d5 b1c3 d5a5": "Scandinavian Defense: Main Line", "e2e4 d7d5 e4d5 d8d5 b1c3 d5a5 b2b4": "Scandinavian Defense: Main Line, Leonhardt Gambit", "e2e4 d7d5 e4d5 d8d5 b1c3 d5a5 d2d4 g8f6": "Scandinavian Defense: Main Line, Mieses Variation", "e2e4 d7d5 e4d5 g8f6 d2d4 f6d5": "Scandinavian Defense: Marshall Variation", "e2e4 d7d5 e4d5 d8d5": "Scandinavian Defense: Mieses-Kotroc Variation", "e2e4 d7d5 e4d5 g8f6": "Scandinavian Defense: Modern Variation", "e2e4 d7d5 e4d5 g8f6 d2d4": "Scandinavian Defense: Modern Variation", "e2e4 d7d5 e4d5 g8f6 d2d4 f6d5 g1f3 c8g4": "Scandinavian Defense: Modern Variation, Gipslis Variation", "e2e4 d7d5 e4d5 g8f6 d2d4 g7g6 c2c4 b7b5": "Scandinavian Defense: Modern Variation, Wing Gambit", "e2e4 d7d5 e4d5 g8f6 c2c4 c7c6": "Scandinavian Defense: Panov Transfer", "e2e4 d7d5 e4d5 g8f6 d2d4 c8g4": "Scandinavian Defense: Portuguese Gambit", "e2e4 d7d5 e4d5 g8f6 d2d4 c8g4 f2f3 g4f5 c2c4": "Scandinavian Defense: Portuguese Gambit, Banker Variation", "e2e4 d7d5 e4d5 g8f6 d2d4 c8g4 g1f3": "Scandinavian Defense: Portuguese Gambit, Classical Variation", "e2e4 d7d5 e4d5 g8f6 d2d4 c8g4 f2f3 g4f5 g2g4": "Scandinavian Defense: Portuguese Gambit, Correspondence Refutation", "e2e4 d7d5 e4d5 g8f6 d2d4 c8g4 f1b5 c7c6": "Scandinavian Defense: Portuguese Gambit, Elbow Variation", "e2e4 d7d5 e4d5 g8f6 d2d4 c8g4 f2f3 g4f5 f1b5 b8d7 c2c4": "Scandinavian Defense: Portuguese Gambit, Jadoul Variation", "e2e4 d7d5 e4d5 g8f6 d2d4 c8g4 f1b5 b8d7 b5e2": "Scandinavian Defense: Portuguese Gambit, Lusophobe Variation", "e2e4 d7d5 e4d5 g8f6 d2d4 c8g4 f2f3 g4f5 f1b5 b8d7 b1c3": "Scandinavian Defense: Portuguese Gambit, Melbourne Shuffle Variation", "e2e4 d7d5 e4d5 g8f6 d2d4 c8g4 f1e2": "Scandinavian Defense: Portuguese Gambit, Wuss Variation", "e2e4 d7d5 e4d5 g8f6 d2d4 f6d5 g1f3 g7g6": "Scandinavian Defense: Richter Variation", "e2e4 d7d5 e4d5 g8f6 d2d4 g7g6": "Scandinavian Defense: Richter Variation", "e2e4 d7d5 e4d5 d8d5 b1c3 d5d6 d2d4 c7c6": "Scandinavian Defense: Schiller-Pytel Variation", "e2e4 d7d5 e4d5 d8d5 b1c3 d5d6 d2d4 g8f6 f1c4 c7c6 g1e2 c8f5 c1f4 d6b4": "Scandinavian Defense: Schiller-Pytel Variation, Modern Variation", "e2e4 d7d5 e4d5 d8d5 b1c3 d5d8": "Scandinavian Defense: Valencian Variation", "e2e4 d7d5 e4d5 d8d5 b1c3 d5d8 d2d4 g8f6 g1f3 c7c6": "Scandinavian Defense: Valencian Variation, Ilundain Variation", "e2e4 d7d5 e4d5 d8d5 b1c3 d5d8 d2d4 g8f6 g1f3 c8g4": "Scandinavian Defense: Valencian Variation, Main Line", "e2e4 d7d5 b2b4": "Scandinavian Defense: Zilbermints Gambit", "e2e4 d7d5 b1c3 d5e4 c3e4 e7e5": "Van Geet Opening: Gr\u00fcnfeld Defense", "e2e4 g8f6": "Alekhine Defense", "e2e4 g8f6 e4e5 f6g8": "Alekhine Defense: Brooklyn Variation", "e2e4 g8f6 e4e5 f6g8 d2d4 f7f5": "Alekhine Defense: Brooklyn Variation, Everglades Variation", "e2e4 g8f6 e4e5 f6d5 b1a3": "Alekhine Defense: Buckley Attack", "e2e4 g8f6 e4e5 f6d5 c2c4 d5b6 c4c5 b6d5 f1c4 e7e6 b1c3": "Alekhine Defense: Hunt Variation, Lasker Simul Gambit", "e2e4 g8f6 e4e5 f6d5 c2c4 d5b6 c4c5 b6d5 b1c3 d5c3 d2c3 d7d6 c1g5": "Alekhine Defense: Hunt Variation, Matsukevich Gambit", "e2e4 g8f6 e4e5 f6d5 c2c4 d5b6 c4c5 b6d5 f1c4 e7e6 b1c3 d7d6 c3d5 e6d5 c4d5": "Alekhine Defense: Hunt Variation, Mikenas Gambit", "e2e4 g8f6 e4e5 f6d5 f1c4 d5b6 c4b3 c7c5 d2d3": "Alekhine Defense: Kmoch Variation", "e2e4 g8f6 f1c4": "Alekhine Defense: Krejcik Variation", "e2e4 g8f6 f1c4 f6e4 c4f7": "Alekhine Defense: Krejcik Variation, Krejcik Gambit", "e2e4 g8f6 d2d3": "Alekhine Defense: Mar\u00f3czy Variation", "e2e4 g8f6 e4e5 f6e4": "Alekhine Defense: Mokele Mbembe", "e2e4 g8f6 e4e5 f6e4 d2d4 f7f6": "Alekhine Defense: Mokele Mbembe, Modern Line", "e2e4 g8f6 e4e5 f6e4 d2d4 e7e6": "Alekhine Defense: Mokele Mbembe, Vavra Defense", "e2e4 g8f6 e4e5 f6d5": "Alekhine Defense: Normal Variation", "e2e4 g8f6 b1c3 d7d5": "Alekhine Defense: Scandinavian Variation", "e2e4 g8f6 b1c3 d7d5 e4d5 c7c6": "Alekhine Defense: Scandinavian Variation, Geschev Gambit", "e2e4 g8f6 b1c3 d7d5 d2d3 d5e4 c1g5": "Alekhine Defense: Scandinavian Variation, Myers Gambit", "e2e4 g8f6 b1c3 d7d5 e4e5 f6d7 e5e6": "Alekhine Defense: Spielmann Gambit", "e2e4 g8f6 e4e5 f6d5 c2c4 d5b6 b2b3": "Alekhine Defense: Steiner Variation", "e2e4 g8f6 e4e5 f6d5 b1c3": "Alekhine Defense: S\u00e4misch Attack", "e2e4 g8f6 e4e5 f6d5 c2c4 d5f4": "Alekhine Defense: The Squirrel", "e2e4 g8f6 e4e5 f6d5 c2c4": "Alekhine Defense: Two Pawns Attack", "e2e4 g8f6 e4e5 f6d5 c2c4 d5b6 c4c5": "Alekhine Defense: Two Pawns Attack, Lasker Variation", "e2e4 g8f6 e4e5 f6d5 c2c4 d5b6 c4c5 b6d5 f1c4 e7e6 b1c3 d7d6": "Alekhine Defense: Two Pawns Attack, Mikenas Variation", "e2e4 g8f6 e4e5 f6d5 c2c4 d5b6 a2a4": "Alekhine Defense: Two Pawns Attack, Tate Variation", "e2e4 g8f6 e4e5 f6d5 b2b3": "Alekhine Defense: Welling Variation", "e2e4 g8f6 e4e5 f6d5 d2d4": "Alekhine Defense", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6": "Alekhine Defense", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4": "Alekhine Defense", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 f1c4": "Alekhine Defense: Balogh Variation", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 e5d6": "Alekhine Defense: Exchange Variation", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 e5d6 c7d6 b1c3 g7g6 h2h3 f8g7 g1f3 e8g8 f1e2 b8c6 e1g1 c8f5 c1f4": "Alekhine Defense: Exchange Variation, Karpov Variation", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 e5d6 c7d6 b1c3 g7g6 c1e3 f8g7 a1c1 e8g8 b2b3": "Alekhine Defense: Exchange Variation, Voronezh Variation", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4": "Alekhine Defense: Four Pawns Attack", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4 g7g5": "Alekhine Defense: Four Pawns Attack, Cambridge Gambit", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4 g7g6": "Alekhine Defense: Four Pawns Attack, Fianchetto Variation", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4 d6e5 f4e5 b8c6 g1f3 c8g4 e5e6 f7e6 c4c5": "Alekhine Defense: Four Pawns Attack, Ilyin-Zhenevsky Variation", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4 d6e5 f4e5 c8f5 b1c3 e7e6 g1f3 f8e7 f1e2 e8g8 e1g1 f7f6": "Alekhine Defense: Four Pawns Attack, Korchnoi Variation", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4 d6e5 f4e5 b8c6 c1e3": "Alekhine Defense: Four Pawns Attack, Main Line", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4 d6e5 f4e5 b8c6 c1e3 c8f5 b1c3 e7e6 g1f3 d8d7 f1e2 e8c8 e1g1 f8e7": "Alekhine Defense: Four Pawns Attack, Tartakower Variation", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4 c8f5": "Alekhine Defense: Four Pawns Attack, Trifunovic Variation", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 c4c5": "Alekhine Defense: Hunt Variation", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 g1f3 c8g4 f1e2": "Alekhine Defense: Modern Variation, Alekhine Gambit", "e2e4 g8f6 e4e5 f6d5 d2d4 b7b5": "Alekhine Defense: O'Sullivan Gambit", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3": "Alekhine Defense: Modern Variation", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 g7g6": "Alekhine Defense: Modern Variation, Alburt Variation", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 g7g6 f1c4 d5b6 c4b3 f8g7 a2a4": "Alekhine Defense: Modern Variation, Keres Variation", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 d6e5": "Alekhine Defense: Modern Variation, Larsen Variation", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 b8c6": "Alekhine Defense: Modern Variation, Larsen-Haakert Variation", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 d5b6": "Alekhine Defense: Modern Variation, Schmid Variation", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 c8g4 c2c4": "Alekhine Defense: Modern Variation, Alekhine Variation", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 c8g4 f1e2 c7c6": "Alekhine Defense: Modern Variation, Flohr Variation", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 c8g4": "Alekhine Defense: Modern Variation, Main Line", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 c8g4 h2h3": "Alekhine Defense: Modern Variation, Panov Variation", "e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 c8g4 c2c4 d5b6 d4d5": "Alekhine Defense: Modern Variation, Vitolins Attack", "e2e4 g7g6": "Modern Defense", "e2e4 g7g6 d2d4 f8g7": "Modern Defense", "e2e4 g7g6 d2d4 f8g7 b1c3 c7c6 f1c4 d7d6 d1e2": "Modern Defense: Anti-Modern", "e2e4 g7g6 d2d4 f8g7 f1c4": "Modern Defense: Bishop Attack", "e2e4 g7g6 d2d4 f8g7 f1c4 b7b5": "Modern Defense: Bishop Attack, B\u00fccker Gambit", "e2e4 g7g6 f1c4 f8g7 d1f3 e7e6 d2d4 g7d4": "Modern Defense: Bishop Attack, Monkey's Bum", "e2e4 g7g6 d2d4 f8g7 c2c4 d7d5 e4d5 c7c6 d5c6 g7d4": "Modern Defense: Dunworthy Variation", "e2e4 g7g6 d2d4 f7f5": "Modern Defense: Fianchetto Gambit", "e2e4 g7g6 d2d4 f8g7 b1c3 c7c6 f2f4 d7d5 e4e5 h7h5": "Modern Defense: Gurgenidze Defense", "e2e4 g7g6 d2d4 f8g7 b1c3 d7d5": "Modern Defense: Lizard Defense, Mittenberger Gambit", "e2e4 g7g6 d2d4 g8h6 b1c3 f7f5 c1h6 f8h6 e4f5 e8g8": "Modern Defense: Masur Gambit", "e2e4 g7g6 d2d4 f8g7 b1c3 c7c5": "Modern Defense: Modern Pterodactyl", "e2e4 g7g6 d2d4 f8g7 b1c3 b7b6": "Modern Defense: Mongredien Defense, with Nc3", "e2e4 g7g6 d2d4 f8g7 g1f3 b7b6": "Modern Defense: Mongredien Defense, with Nf3", "e2e4 g7g6 d2d4 g8f6": "Modern Defense: Norwegian Defense", "e2e4 g7g6 d2d4 g8f6 e4e5 f6h5 f1e2 d7d6": "Modern Defense: Norwegian Defense, Norwegian Gambit", "e2e4 g7g6 d2d4 f8g7 b1c3 d7d6 f2f4": "Modern Defense: Pseudo-Austrian Attack", "e2e4 g7g6 d2d4 f8g7 c2c4 c7c5 g1f3 d7d6 f1e2 d8a5": "Modern Defense: Semi-Averbakh Variation, Pterodactyl Variation Declined", "e2e4 g7g6 d2d4 f8g7 b1c3 d7d6": "Modern Defense: Standard Defense", "e2e4 g7g6 d2d4 f8g7 b1c3": "Modern Defense: Standard Line", "e2e4 g7g6 d2d4 f8g7 f2f4": "Modern Defense: Three Pawns Attack", "e2e4 g7g6 d2d4 f8g7 b1c3 d7d6 g1f3": "Modern Defense: Two Knights Variation", "e2e4 g7g6 d2d4 f8g7 b1c3 c7c6 g1f3 d7d6": "Modern Defense: Two Knights Variation, Suttles Variation", "e2e4 g7g6 d2d4 f8g7 b1c3 d7d6 g1f3 c7c6 c1g5 d8b6 d1d2 b6b2": "Modern Defense: Two Knights Variation, Suttles Variation, Tal Gambit", "e2e4 g7g6 d2d4 f8g7 c1d2": "Modern Defense: Westermann Gambit", "e2e4 g7g6 d2d4 f8g7 f1d3": "Modern Defense: Wind Gambit", "e2e4 g7g6 d2d4 g8f6 e4e5 f6h5 g2g4 h5g7": "Norwegian Defense", "e2e4 g7g6 d2d4 f8g7 f2f4 c7c5 g1f3 d8a5": "Pterodactyl Defense: Austrian, Austriadactylus Western", "e2e4 g7g6 b1c3 f8g7 f2f4 c7c5 g1f3 d8a5": "Pterodactyl Defense: Austrian, Grand Prix Pterodactyl", "e2e4 g7g6 d2d4 f8g7 f2f4 c7c5 c2c3 d8a5": "Pterodactyl Defense: Austrian, Pteranodon", "e2e4 g7g6 d2d4 f8g7 c2c4 c7c5 b1c3 d7d6 c1e3 d8a5": "Pterodactyl Defense: Central, Anhanguera", "e2e4 g7g6 d2d4 f8g7 c2c4 c7c5 d4d5 d7d6 b1c3 d8a5": "Pterodactyl Defense: Central, Benoni Quetzalcoatlus", "e2e4 g7g6 d2d4 f8g7 c2c4 c7c5 b1c3 d7d6 d4c5 d8a5": "Pterodactyl Defense: Central, Quetzalcoatlus Gambit", "e2e4 g7g6 d2d4 f8g7 b1c3 c7c5 c1e3": "Pterodactyl Defense: Eastern, Anhanguera", "d2d4 g7g6 e2e4 f8g7 b1c3 c7c5 d4d5": "Pterodactyl Defense: Eastern, Benoni", "e2e4 g7g6 d2d4 f8g7 b1c3 c7c5 d4d5 g7c3 b2c3 d8a5": "Pterodactyl Defense: Eastern, Benoni Pteranodon", "d2d4 g7g6 b1c3 f8g7 e2e4 c7c5 d4d5 d8a5": "Pterodactyl Defense: Eastern, Benoni Pterodactyl", "e2e4 g7g6 d2d4 f8g7 b1c3 c7c5 d4c5 g7c3 b2c3 d8a5": "Pterodactyl Defense: Eastern, Pteranodon", "e2e4 g7g6 d2d4 f8g7 b1c3 c7c5 d4c5 d8a5": "Pterodactyl Defense: Eastern, Pterodactyl", "e2e4 g7g6 d2d4 f8g7 b1c3 c7c5 d4c5": "Pterodactyl Defense: Eastern, Rhamphorhynchus", "e2e4 g7g6 d2d4 f8g7 g2g3 c7c5 g1f3 d8a5": "Pterodactyl Defense: Fianchetto, King Pterodactyl", "e2e4 g7g6 d2d4 f8g7 g2g3 c7c5 d4c5 d8a5": "Pterodactyl Defense: Fianchetto, Rhamphorhynchus", "e2e4 g7g6 d2d4 f8g7 b1c3 c7c5 g1f3 d8a5 f1e2 d7d6": "Pterodactyl Defense: Sicilian, Quetzalcoatlus", "e2e4 g7g6 d2d4 f8g7 b1c3 c7c5 g1f3 d8a5 f1c4": "Pterodactyl Defense: Sicilian, Siroccopteryx", "e2e4 g7g6 d2d4 f8g7 g1f3 c7c5 c1e3 d8a5": "Pterodactyl Defense: Western, Anhanguera", "e2e4 g7g6 g1f3 f8g7 d2d4 c7c5 f1c4 c5d4 f3d4 d8a5": "Pterodactyl Defense: Western, Siroccopteryx", "e2e4 g7g6 d2d4 d7d6 b1c3 c7c6": "Rat Defense: Accelerated Gurgenidze", "e2e4 d7d6 d2d4 g8f6 b1c3 c7c6": "Czech Defense", "e2e4 d7d6 d2d4 e7e5": "King's Pawn Game: Mar\u00f3czy Defense", "e2e4 d7d6 d2d4 g8f6 b1c3 b8d7 f2f4": "Lion Defense: Anti-Philidor", "e2e4 d7d6 d2d4 g8f6 b1c3 b8d7 f2f4 e7e5": "Lion Defense: Anti-Philidor, Lion's Cave", "e2e4 d7d6 d2d4 g8f6 b1c3 b8d7 f2f4 e7e5 g1f3 e5d4 d1d4 c7c6 f1c4 d6d5": "Lion Defense: Anti-Philidor, Lion's Cave, Lion Claw Gambit", "e2e4 d7d6 d2d4 g8f6 b1c3 b8d7 g2g4": "Lion Defense: Bayonet Attack", "e2e4 g7g6 d2d4 f8g7 g1f3 d7d6 c2c3": "Modern Defense: Geller's System", "e2e4 d7d6 d2d4 g8f6 b1c3 g7g6": "Pirc Defense", "e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 c1e3 c7c6 d1d2": "Pirc Defense: 150 Attack", "e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 c1e3 c7c6 d1d2 c8g4": "Pirc Defense: 150 Attack, Inner Doll Defense", "e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 c1e3 c7c6 h2h3": "Pirc Defense: 150 Attack, Sveshnikov-Jansa Attack", "e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f1e2 f8g7 h2h4": "Pirc Defense: Bayonet Attack", "e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 c1g5": "Pirc Defense: Byrne Variation", "e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f1e2 f8g7 g2g4": "Pirc Defense: Chinese Variation", "e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f1c4": "Pirc Defense: Kholmov System", "e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 g2g3": "Pirc Defense: Sveshnikov System", "e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 g1f3": "Pirc Defense: Classical Variation", "e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 g1f3 f8g7": "Pirc Defense: Classical Variation", "e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 g1f3 f8g7 f1e2": "Pirc Defense: Classical Variation, Quiet System", "e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 g1f3 f8g7 f1e2 e8g8 e1g1 b8c6": "Pirc Defense: Classical Variation, Quiet System, Chigorin Line", "e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 g1f3 f8g7 f1e2 e8g8 e1g1 c7c6": "Pirc Defense: Classical Variation, Quiet System, Czech Defense", "e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 g1f3 f8g7 f1e2 e8g8 e1g1 c8g4": "Pirc Defense: Classical Variation, Quiet System, Parma Defense", "e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 g1f3 f8g7 h2h3": "Pirc Defense: Classical Variation, Schlechter Variation", "e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f2f4": "Pirc Defense: Austrian Attack", "e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f2f4 f8g7 g1f3 e8g8": "Pirc Defense: Austrian Attack", "e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f2f4 f8g7 g1f3 c7c5": "Pirc Defense: Austrian Attack, Dragon Formation", "e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f2f4 f8g7 g1f3 e8g8 c1e3": "Pirc Defense: Austrian Attack, Kurajica Variation", "e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f2f4 f8g7 f1c4": "Pirc Defense: Austrian Attack, Ljubojevic Variation", "e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f2f4 f8g7 g1f3 e8g8 e4e5": "Pirc Defense: Austrian Attack, Unzicker Attack", "e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f2f4 f8g7 g1f3 e8g8 e4e5 f6d7 h2h4": "Pirc Defense: Austrian Attack, Unzicker Attack, Bronstein Variation", "e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f2f4 f8g7 g1f3 e8g8 f1d3": "Pirc Defense: Austrian Attack, Weiss Variation", "e2e4 c7c6": "Caro-Kann Defense", "e2e4 c7c6 b1c3": "Caro-Kann Defense", "e2e4 c7c6 b1c3 d7d5": "Caro-Kann Defense", "e2e4 c7c6 c2c4": "Caro-Kann Defense: Accelerated Panov Attack", "e2e4 c7c6 c2c4 d7d5": "Caro-Kann Defense: Accelerated Panov Attack", "e2e4 c7c6 c2c4 d7d5 e4d5 c6d5 c4d5 g8f6": "Caro-Kann Defense: Accelerated Panov Attack, Modern Variation", "e2e4 c7c6 c2c4 e7e5": "Caro-Kann Defense: Accelerated Panov Attack, Open Variation", "e2e4 c7c6 c2c4 d7d5 e4d5 d8d5": "Caro-Kann Defense: Accelerated Panov Attack, Pseudo-Scandinavian", "e2e4 c7c6 c2c4 d7d5 c4d5 c6d5 d1b3": "Caro-Kann Defense: Accelerated Panov Attack, Van Weersel Attack", "e2e4 c7c6 g1f3 d7d5 e4d5 c6d5 f3e5": "Caro-Kann Defense: Apocalypse Attack", "e2e4 c7c6 d2d3": "Caro-Kann Defense: Breyer Variation", "e2e4 c7c6 d2d3 d7d5 b1d2 g7g6 g1f3 f8g7 g2g3 e7e5 f1g2 g8e7 e1g1 e8g8 b2b4": "Caro-Kann Defense: Breyer Variation, Stein Attack", "e2e4 c7c6 b2b3": "Caro-Kann Defense: Euwe Attack", "e2e4 c7c6 b1c3 d7d5 d1f3": "Caro-Kann Defense: Goldman Variation", "e2e4 c7c6 b1c3 d7d5 g1f3 d5e4 f3g5": "Caro-Kann Defense: Hector Gambit", "e2e4 c7c6 f1c4": "Caro-Kann Defense: Hillbilly Attack", "e2e4 c7c6 f1c4 d7d5 c4b3 d5e4 d1h5": "Caro-Kann Defense: Hillbilly Attack, Schaeffer Gambit", "e2e4 c7c6 b2b4": "Caro-Kann Defense: Labahn Attack", "e2e4 c7c6 b2b4 d7d5 b4b5": "Caro-Kann Defense: Labahn Attack, Double Gambit", "e2e4 c7c6 b2b4 e7e5 c1b2": "Caro-Kann Defense: Labahn Attack, Polish Variation", "e2e4 c7c6 b1c3 d7d5 d2d3 d5e4 c1g5": "Caro-Kann Defense: Scorpion-Horus Gambit", "e2e4 c7c6 g2g4": "Caro-Kann Defense: Spike Variation", "e2e4 c7c6 g2g4 d7d5 b1c3 d5e4 d2d3": "Caro-Kann Defense: Spike Variation, Scorpion-Grob Gambit", "e2e4 c7c6 b1c3 d7d5 h2h3": "Caro-Kann Defense: St. Patrick's Attack", "e2e4 c7c6 c2c4 d7d5 e4e5": "Caro-Kann Defense: Toikkanen Gambit", "e2e4 c7c6 b1c3 d7d5 g1f3": "Caro-Kann Defense: Two Knights Attack", "e2e4 c7c6 b1c3 d7d5 g1f3 c8g4": "Caro-Kann Defense: Two Knights Attack, Mindeno Variation", "e2e4 c7c6 b1c3 d7d5 g1f3 c8g4 h2h3 g4f3": "Caro-Kann Defense: Two Knights Attack, Mindeno Variation, Exchange Line", "e2e4 c7c6 b1c3 d7d5 g1f3 c8g4 h2h3 g4h5": "Caro-Kann Defense: Two Knights Attack, Mindeno Variation, Retreat Line", "e2e4 c7c6 d2d4": "Caro-Kann Defense", "e2e4 c7c6 d2d4 d7d5": "Caro-Kann Defense", "e2e4 c7c6 d2d4 d7d5 e4e5": "Caro-Kann Defense: Advance Variation", "e2e4 c7c6 d2d4 d7d5 e4e5 c8f5 g2g4": "Caro-Kann Defense: Advance Variation, Bayonet Attack", "e2e4 c7c6 d2d4 d7d5 e4e5 c6c5": "Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense", "e2e4 c7c6 d2d4 d7d5 e4e5 c8f5 g1e2": "Caro-Kann Defense: Advance Variation, Bronstein Variation", "e2e4 c7c6 d2d4 d7d5 e4e5 c8f5 b2b4": "Caro-Kann Defense: Advance Variation, Prins Attack", "e2e4 c7c6 d2d4 d7d5 e4e5 c8f5 g1f3": "Caro-Kann Defense: Advance Variation, Short Variation", "e2e4 c7c6 d2d4 d7d5 e4e5 c8f5 h2h4": "Caro-Kann Defense: Advance Variation, Tal Variation", "e2e4 c7c6 d2d4 d7d5 e4e5 c8f5 b1c3": "Caro-Kann Defense: Advance Variation, Van der Wiel Attack", "e2e4 c7c6 d2d4 d7d5 e4e5 c8f5 b1c3 e7e6 g2g4 f5g6 g1e2 c6c5 h2h4": "Caro-Kann Defense: Advance Variation, Van der Wiel Attack", "e2e4 c7c6 d2d4 d7d5 e4e5 c8f5 b1c3 d8b6": "Caro-Kann Defense: Advance Variation, Van der Wiel Attack, Dreyev Defense", "e2e4 c7c6 d2d4 d7d5 e4e5 c8f5 c2c3 e7e6 f1e2": "Caro-Kann Defense: Advance, Short Variation", "e2e4 c7c6 d2d4 b8a6": "Caro-Kann Defense: De Bruycker Defense", "e2e4 c7c6 d2d4 b8a6 b1c3 a6c7": "Caro-Kann Defense: De Bruycker Defense", "e2e4 c7c6 d2d4 d7d5 b1d2 d8b6": "Caro-Kann Defense: Edinburgh Variation", "e2e4 c7c6 d2d4 d7d5 f2f3": "Caro-Kann Defense: Mar\u00f3czy Variation", "e2e4 c7c6 d2d4 d7d5 f2f3 d5e4 f3e4 e7e5 g1f3 e5d4 f1c4": "Caro-Kann Defense: Mar\u00f3czy Variation, Mar\u00f3czy Gambit", "e2e4 c7c6 d2d4 g8f6": "Caro-Kann Defense: Masi Variation", "e2e4 c7c6 d2d4 f7f5": "Caro-Kann Defense: Massachusetts Defense", "e2e4 c7c6 d2d4 d7d5 f1d3 g8f6 e4e5 f6d7 e5e6": "Caro-Kann Defense: Mieses Attack, Landau Gambit", "e2e4 c7c6 d2d4 d7d5 c1e3": "Caro-Kann Defense: Mieses Gambit", "e2e4 c7c6 d2d4 d7d5 b1d2": "Caro-Kann Defense: Modern Variation", "e2e4 c7c6 d2d4 d7d5 g1f3 d5e4 f3g5": "Caro-Kann Defense: Ulysses Gambit", "e2e4 c7c6 d2d4 d7d5 e4d5": "Caro-Kann Defense: Exchange Variation", "e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 g1f3 b8c6": "Caro-Kann Defense: Exchange Variation", "e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 g2g4": "Caro-Kann Defense: Exchange Variation, Bulla Attack", "e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 f1d3 b8c6 c2c3 g8f6 c1f4": "Caro-Kann Defense: Exchange Variation, Rubinstein Variation", "e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4": "Caro-Kann Defense: Panov Attack", "e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 b1c3": "Caro-Kann Defense: Panov Attack", "e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 c4c5": "Caro-Kann Defense: Panov Attack, Gunderam Attack", "e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 b1c3 b8c6": "Caro-Kann Defense: Panov Attack, Modern Defense", "e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 b1c3 b8c6 c1g5 e7e6": "Caro-Kann Defense: Panov Attack, Modern Defense, Carlsbad Line", "e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 b1c3 b8c6 c1g5 d8a5": "Caro-Kann Defense: Panov Attack, Modern Defense, Czerniak Line", "e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 b1c3 b8c6 g1f3 c8g4": "Caro-Kann Defense: Panov Attack, Modern Defense, Mieses Line", "e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 b1c3 b8c6 c1g5 d8b6": "Caro-Kann Defense: Panov Attack, Modern Defense, Reifir-Spielmann Line", "e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 b1c3 b8c6 c1g5 d5c4 d4d5 c6a5": "Caro-Kann Defense: Panov-Botvinnik, Herzog Defense", "e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 b1c3 e7e6": "Caro-Kann Defense: Panov Attack", "e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 b1c3 g7g6": "Caro-Kann Defense: Panov Attack, Fianchetto Defense", "e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 b1c3 g7g6 c4d5 f8g7": "Caro-Kann Defense: Panov Attack, Fianchetto Defense, Fianchetto Gambit", "e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 b1c3 e7e6 g1f3 f8b4": "Caro-Kann Defense: Panov Attack, Main Line", "e2e4 c7c6 d2d4 d7d5 b1c3": "Caro-Kann Defense", "e2e4 c7c6 d2d4 d7d5 b1c3 d5e4": "Caro-Kann Defense", "e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 g8f6 f1d3": "Caro-Kann Defense: Alekhine Gambit", "e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 g8f6 e4g5 h7h6 g5f7": "Caro-Kann Defense: Alien Gambit", "e2e4 c7c6 d2d4 d7d5 b1c3 g8f6": "Caro-Kann Defense: Campomanes Attack", "e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 g8f6 e4f6 e7f6 f1c4": "Caro-Kann Defense: Forgacs Variation", "e2e4 c7c6 d2d4 d7d5 b1c3 b7b5": "Caro-Kann Defense: Gurgenidze Counterattack", "e2e4 c7c6 d2d4 d7d5 b1c3 g7g6": "Caro-Kann Defense: Gurgenidze System", "e2e4 c7c6 d2d4 d7d5 b1d2 d5e4 d2e4": "Caro-Kann Defense: Main Line", "e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 f2f3": "Caro-Kann Defense: Rasa-Studier Gambit", "e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 g8f6 e4f6 e7f6": "Caro-Kann Defense: Tartakower Variation", "e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 f1c4": "Caro-Kann Defense: von Hennig Gambit", "e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 g8f6 e4f6 g7f6": "Caro-Kann Defense: Bronstein-Larsen Variation", "e2e4 c7c6 d2d4 d7d5 b1d2 d5e4 d2e4 h7h6": "Caro-Kann Defense: Finnish Variation", "e2e4 c7c6 d2d4 d7d5 b1d2 d5e4 d2e4 b8d7": "Caro-Kann Defense: Karpov Variation", "e2e4 c7c6 d2d4 d7d5 b1d2 d5e4 d2e4 b8d7 e4g5 g8f6 f1d3 e7e6 g1f3 f8d6 d1e2 h7h6 g5e4 f6e4 e2e4": "Caro-Kann Defense: Karpov Variation, Modern Main Line", "e2e4 c7c6 d2d4 d7d5 b1d2 d5e4 d2e4 b8d7 e4g5": "Caro-Kann Defense: Karpov Variation, Modern Variation", "e2e4 c7c6 d2d4 d7d5 b1d2 d5e4 d2e4 b8d7 e4g5 d7f6": "Caro-Kann Defense: Karpov Variation, Modern Variation, Ivanchuk Defense", "e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 b8d7 g1f3 g8f6 e4g3": "Caro-Kann Defense: Karpov Variation, Modern Variation, Kasparov Attack", "e2e4 c7c6 d2d4 d7d5 b1d2 d5e4 d2e4 b8d7 f1c4 g8f6 e4g5 e7e6 d1e2 d7b6": "Caro-Kann Defense: Karpov Variation, Smyslov Variation", "e2e4 c7c6 d2d4 d7d5 b1d2 d5e4 d2e4 b8d7 f1c4 g8f6 e4g5 e7e6 d1e2 d7b6 c4b3": "Caro-Kann Defense: Karpov Variation, Smyslov Variation, Main Line", "e2e4 c7c6 d2d4 d7d5 b1d2 d5e4 d2e4 b8d7 f1c4 g8f6 e4f6 d7f6": "Caro-Kann Defense: Karpov Variation, Tiviakov-Fischer Attack", "e2e4 c7c6 d2d4 d7d5 b1d2 d5e4 d2e4 c8f5": "Caro-Kann Defense: Classical Variation", "e2e4 c7c6 d2d4 d7d5 b1d2 d5e4 d2e4 c8f5 e4g3 f5g6 g1h3": "Caro-Kann Defense: Classical Variation, Flohr Variation", "e2e4 c7c6 d2d4 d7d5 b1d2 d5e4 d2e4 c8f5 e4g3 f5g6 h2h4": "Caro-Kann Defense: Classical Variation, Main Line", "e2e4 c7c6 d2d4 d7d5 b1d2 d5e4 d2e4 c8f5 e4g3 f5g6 f2f4": "Caro-Kann Defense: Classical Variation, Mar\u00f3czy Attack", "e2e4 c7c6 d2d4 d7d5 b1d2 d5e4 d2e4 c8f5 e4g3 f5g6 h2h4 h7h6 g1f3 b8d7": "Caro-Kann Defense: Classical Variation", "e2e4 c7c6 d2d4 d7d5 b1d2 d5e4 d2e4 c8f5 e4g3 f5g6 h2h4 h7h6 g1f3 b8d7 h4h5 g6h7 f1d3 h7d3 d1d3 e7e6 c1d2 g8f6 e1c1 f8e7": "Caro-Kann Defense: Classical Variation, Lobron System", "e2e4 c7c6 d2d4 d7d5 b1d2 d5e4 d2e4 c8f5 e4g3 f5g6 h2h4 h7h6 g1f3 b8d7 h4h5 g6h7 f1d3 h7d3 d1d3 g8f6 c1d2 e7e6 e1c1 f8d6": "Caro-Kann Defense: Classical Variation, Seirawan Variation", "e2e4 c7c6 d2d4 d7d5 b1d2 d5e4 d2e4 c8f5 e4g3 f5g6 h2h4 h7h6 g1f3 b8d7 h4h5": "Caro-Kann Defense: Classical Variation, Spassky Variation", "e2e4 c7c5": "Sicilian Defense", "e2e4 c7c5 d1g4": "Sicilian Defense: Amazon Attack", "e2e4 c7c5 d2d3 b8c6 c2c3 d7d6 f2f4": "Sicilian Defense: Big Clamp Formation", "e2e4 c7c5 f1c4": "Sicilian Defense: Bowdler Attack", "e2e4 c7c5 g1h3": "Sicilian Defense: Brick Variation", "e2e4 c7c5 b2b3 d7d5 c1b2": "Sicilian Defense: Euwe Attack, Prins Gambit", "e2e4 c7c5 c2c4 d7d6 b1c3 b8c6 g2g3 h7h5": "Sicilian Defense: Gloria Variation", "e2e4 c7c5 g2g4": "Sicilian Defense: Grob Variation", "e2e4 c7c5 g1e2": "Sicilian Defense: Keres Variation", "e2e4 c7c5 e1e2": "Sicilian Defense: King David's Opening", "e2e4 c7c5 b1a3": "Sicilian Defense: Kronberger Variation", "e2e4 c7c5 b1a3 b8c6 d2d4 c5d4 f1c4": "Sicilian Defense: Kronberger Variation, Nemeth Gambit", "e2e4 c7c5 g2g3": "Sicilian Defense: Lasker-Dunne Attack", "e2e4 c7c5 a2a3": "Sicilian Defense: Mengarini Variation", "e2e4 c7c5 a2a4": "Sicilian Defense: Myers Attack, with a4", "e2e4 c7c5 h2h4": "Sicilian Defense: Myers Attack, with h4", "e2e4 c7c5 b2b3": "Sicilian Defense: Snyder Variation", "e2e4 c7c5 b2b3 b7b6": "Sicilian Defense: Snyder Variation, Queen Fianchetto Variation", "e2e4 c7c5 c2c4": "Sicilian Defense: Staunton-Cochrane Variation", "e2e4 c7c5 b2b4": "Sicilian Defense: Wing Gambit", "e2e4 c7c5 b2b4 c5b4 c1b2": "Sicilian Defense: Wing Gambit, Abrahams Variation", "e2e4 c7c5 b2b4 c5b4 a2a3 b4a3": "Sicilian Defense: Wing Gambit, Carlsbad Variation", "e2e4 c7c5 b2b4 c5b4 a2a3 d7d5 e4d5 d8d5 c1b2": "Sicilian Defense: Wing Gambit, Marienbad Variation", "e2e4 c7c5 b2b4 c5b4 a2a3": "Sicilian Defense: Wing Gambit, Marshall Variation", "e2e4 c7c5 b2b4 c5b4 a2a3 d7d5 e4d5 d8d5 g1f3 e7e5 c2c4 d5e6 f1d3": "Sicilian Defense: Wing Gambit, Nanu Gambit", "e2e4 c7c5 b2b4 c5b4 a2a3 d7d5 e4d5 d8d5 g1f3 e7e5 c1b2 b8c6 c2c4 d5e6": "Sicilian Defense: Wing Gambit, Romanian Defense", "e2e4 c7c5 b2b4 c5b4 c2c4": "Sicilian Defense: Wing Gambit, Santasiere Variation", "e2e4 c7c5 f2f4 d7d5 g1f3 d5e4": "Bird Opening: Dutch Variation, Batavo Gambit", "e2e4 c7c5 d2d4 c5d4 d1d4 b8c6 d4d1 g8f6 f1c4": "Sicilian Defense: Coles Sicilian Gambit", "e2e4 c7c5 d2d4 c5d4 f2f4": "Sicilian Defense: Halasz Gambit", "e2e4 c7c5 f2f4": "Sicilian Defense: McDonnell Attack", "e2e4 c7c5 f2f4 d7d5 e4d5 g8f6": "Sicilian Defense: McDonnell Attack, Tal Gambit", "e2e4 c7c5 d2d4 c5d4 g1f3": "Sicilian Defense: Morphy Gambit", "e2e4 c7c5 d2d4 c5d4 g1f3 e7e5 c2c3": "Sicilian Defense: Morphy Gambit, Andreaschek Gambit", "e2e4 c7c5 d2d4": "Sicilian Defense: Smith-Morra Gambit", "e2e4 c7c5 d2d4 c5d4 c2c3": "Sicilian Defense: Smith-Morra Gambit", "e2e4 c7c5 d2d4 c5d4 c2c3 d4c3 b1c3 d7d6 g1f3 e7e6 f1c4 g8f6 e1g1 a7a6": "Sicilian Defense: Smith-Morra Gambit Accepted, Chicago Defense", "e2e4 c7c5 d2d4 c5d4 c2c3 d4c3 b1c3 b8c6 g1f3 d7d6 f1c4 a7a6 e1g1 g8f6": "Sicilian Defense: Smith-Morra Gambit Accepted, Classical Formation", "e2e4 c7c5 d2d4 c5d4 c2c3 d4c3 b1c3 b8c6 g1f3 g7g6": "Sicilian Defense: Smith-Morra Gambit Accepted, Fianchetto Defense", "e2e4 c7c5 d2d4 c5d4 c2c3 d4c3 b1c3 e7e6 g1f3 d7d6 f1c4 a7a6 e1g1 f8e7 d1e2 g8f6": "Sicilian Defense: Smith-Morra Gambit Accepted, Finegold Defense", "e2e4 c7c5 d2d4 c5d4 c2c3 d4c3 b1c3 e7e6 g1f3 a7a6": "Sicilian Defense: Smith-Morra Gambit Accepted, Kan Formation", "e2e4 c7c5 d2d4 c5d4 c2c3 d4c3 b1c3 b8c6 g1f3 e7e6 f1c4 d8c7 d1e2 a7a6 e1g1 f8d6": "Sicilian Defense: Smith-Morra Gambit Accepted, Larsen Defense", "e2e4 c7c5 d2d4 c5d4 c2c3 d4c3 b1c3 b8c6 g1f3 e7e6 f1c4 f8c5": "Sicilian Defense: Smith-Morra Gambit Accepted, Morphy Defense", "e2e4 c7c5 d2d4 c5d4 c2c3 d4c3 b1c3 b8c6 g1f3 e7e6 f1c4 a7a6 e1g1 b7b5 c4b3 f8c5": "Sicilian Defense: Smith-Morra Gambit Accepted, Morphy Defense Deferred", "e2e4 c7c5 d2d4 c5d4 c2c3 d4c3 b1c3 b8c6 g1f3 e7e6 f1c4 a7a6": "Sicilian Defense: Smith-Morra Gambit Accepted, Paulsen Formation", "e2e4 c7c5 d2d4 c5d4 c2c3 d4c3 b1c3 b8c6 g1f3 e7e6 f1c4 f8b4": "Sicilian Defense: Smith-Morra Gambit Accepted, Pin Defense", "e2e4 c7c5 d2d4 c5d4 c2c3 d4c3 b1c3 b8c6 g1f3 d7d6 f1c4 e7e6": "Sicilian Defense: Smith-Morra Gambit Accepted, Scheveningen Formation", "e2e4 c7c5 d2d4 c5d4 c2c3 d4c3 b1c3 b8c6 f1c4 e7e6 g1f3 d7d6 e1g1 a7a6 d1e2 b7b5": "Sicilian Defense: Smith-Morra Gambit Accepted, Sozin Formation", "e2e4 c7c5 d2d4 c5d4 c2c3 d4c3 b1c3 e7e6 f1c4 a7a6 g1f3 g8e7": "Sicilian Defense: Smith-Morra Gambit Accepted, Taimanov Formation", "e2e4 c7c5 d2d4 c5d4 c2c3 g8f6": "Sicilian Defense: Smith-Morra Gambit Declined, Alapin Formation", "e2e4 c7c5 d2d4 c5d4 c2c3 e7e5": "Sicilian Defense: Smith-Morra Gambit Declined, Center Formation", "e2e4 c7c5 d2d4 c5d4 c2c3 d4d3 c3c4": "Sicilian Defense: Smith-Morra Gambit Declined, Dubois Variation", "e2e4 c7c5 d2d4 c5d4 c2c3 d4d3": "Sicilian Defense: Smith-Morra Gambit Declined, Push Variation", "e2e4 c7c5 d2d4 c5d4 c2c3 d7d5": "Sicilian Defense: Smith-Morra Gambit Declined, Scandinavian Formation", "e2e4 c7c5 d2d4 c5d4 c2c3 d8a5": "Sicilian Defense: Smith-Morra Gambit Declined, Wing Formation", "e2e4 c7c5 d2d4 c5d4 c2c3 d4c3 b1c3 b8c6 f1c4 e7e6 g1f3 d7d6 e1g1 a7a6 d1e2 b7b5 c4b3 a8a7": "Sicilian Defense: Smith-Morra Gambit, Chicago Defense", "e2e4 c7c5 d2d4 c5d4 c2c3 d4c3 g1f3": "Sicilian Defense: Smith-Morra Gambit, Danish Variation", "e2e4 c7c5 c2c3": "Sicilian Defense: Alapin Variation", "e2e4 c7c5 c2c3 d7d5 e4d5 d8d5": "Sicilian Defense: Alapin Variation, Barmen Defense", "e2e4 c7c5 c2c3 d7d5 e4d5 d8d5 d2d4 c5d4 c3d4 b8c6 g1f3 c8g4": "Sicilian Defense: Alapin Variation, Barmen Defense, Central Exchange", "e2e4 c7c5 c2c3 d7d5 e4d5 d8d5 d2d4 c5d4 c3d4 b8c6 g1f3 c8g4 b1c3 g4f3 g2f3 d5d4 d1d4 c6d4": "Sicilian Defense: Alapin Variation, Barmen Defense, Endgame Variation", "e2e4 c7c5 c2c3 d7d5 e4d5 d8d5 d2d4 b8c6 g1f3 c5d4 c3d4 e7e5 b1c3 f8b4 f1e2": "Sicilian Defense: Alapin Variation, Barmen Defense, Milner-Barry Attack", "e2e4 c7c5 c2c3 d7d5 e4d5 d8d5 d2d4 g8f6 g1f3 c8g4": "Sicilian Defense: Alapin Variation, Barmen Defense, Modern Line", "e2e4 c7c5 c2c3 g8f6 e4e5 f6d5 d2d4 c5d4": "Sicilian Defense: Alapin Variation, Smith-Morra Declined", "e2e4 c7c5 c2c3 g8f6 e4e5 f6d5 g1f3 b8c6 f1c4 d5b6 c4b3": "Sicilian Defense: Alapin Variation, Stoltz Attack", "e2e4 c7c5 c2c3 g8f6 e4e5 f6d5 g1f3 b8c6 f1c4 d5b6 c4b3 c5c4 b3c2 d8c7 d1e2 g7g5": "Sicilian Defense: Alapin Variation, Stoltz Attack, Ivanchuk Line", "e2e4 c7c5 c2c3 g8f6 e4e5 f6d5 g1f3 b8c6 b1a3": "Sicilian Defense: Heidenfeld Variation", "e2e4 c7c5 b1c3": "Sicilian Defense: Closed", "e2e4 c7c5 b1c3 e7e6": "Sicilian Defense: Closed", "e2e4 c7c5 b1c3 e7e6 g2g3": "Sicilian Defense: Closed", "e2e4 c7c5 b1c3 b8c6 g1e2": "Sicilian Defense: Closed, Chameleon Variation", "e2e4 c7c5 b1c3 b8c6 g2g4": "Sicilian Defense: Closed, Grob Attack", "e2e4 c7c5 b1c3 e7e6 g2g3 d7d5": "Sicilian Defense: Closed, Korchnoi Defense", "e2e4 c7c5 b1c3 b8c6": "Sicilian Defense: Closed, Traditional", "e2e4 c7c5 b1c3 b8c6 f2f4": "Sicilian Defense: Grand Prix Attack", "e2e4 c7c5 b1c3 b8c6 f2f4 g7g6 g1f3 f8g7 f1c4 e7e6 f4f5": "Sicilian Defense: Grand Prix Attack, Schofman Variation", "e2e4 c7c5 b1c3 b8c6 g2g3 g7g6": "Sicilian Defense: Closed", "e2e4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7": "Sicilian Defense: Closed", "e2e4 c7c5 b1c3 b8c6 g2g3": "Sicilian Defense: Closed, Fianchetto Variation", "e2e4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 e7e6 c1e3 c6d4 c3e2": "Sicilian Defense: Closed, Smyslov Variation", "e2e4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 d7d6": "Sicilian Defense: Closed", "e2e4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 d7d6 f2f4": "Sicilian Defense: Closed", "e2e4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 d7d6 f2f4 e7e5 g1h3 g8e7": "Sicilian Defense: Closed, Botvinnik Defense, Edge Variation", "e2e4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 d7d6 g1e2 e7e5": "Sicilian Defense: Closed, Botvinnik Defense, with Nge2", "e2e4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 d7d6 f2f4 e7e5": "Sicilian Defense: Closed, Botvinnik Defense, with f4", "e2e4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 d7d6 c1e3": "Sicilian Defense: Closed", "e2e4 c7c5 g1f3 g7g6 d2d4 f8g7 b1c3 d8a5": "Modern Defense: Pterodactyl Variation", "e2e4 c7c5 g1f3 g7g6 d2d4 f8g7 b1c3 d8a5 c1e3": "Pterodactyl Defense: Sicilian, Anhanguera", "e2e4 c7c5 g1f3 g7g6 d2d4 f8g7 b1c3 d8a5 d4d5": "Pterodactyl Defense: Sicilian, Benoni Gambit", "e2e4 c7c5 g1f3 g7g6 d2d4 f8g7 d4c5 d8a5 b1c3 g7c3 b2c3": "Pterodactyl Defense: Sicilian, Pteranodon", "e2e4 c7c5 g1f3 g7g6 d2d4 f8g7 d4c5 d8a5 b1c3": "Pterodactyl Defense: Sicilian, Rhamphorhynchus", "e2e4 c7c5 g1f3 g7g6 d2d4 f8g7 b1c3 d8a5 c1d2": "Pterodactyl Defense: Sicilian, Unpin", "e2e4 c7c5 g1f3 g7g6 c2c3 f8g7 d2d4 d8a5": "Pterodactyl Defense: Western, Pterodactyl", "e2e4 c7c5 g1f3 g7g6 d2d4 f8g7 d4c5 d8a5": "Pterodactyl Defense: Western, Rhamphorhynchus", "e2e4 c7c5 g1f3": "Sicilian Defense", "e2e4 c7c5 g1f3 g7g6 c2c4 f8h6": "Sicilian Defense: Acton Extension", "e2e4 c7c5 g1f3 f7f5": "Sicilian Defense: Brussels Gambit", "e2e4 c7c5 g1f3 h7h6": "Sicilian Defense: B\u00fccker Variation", "e2e4 c7c5 g1f3 f7f5 e4f5 g8h6": "Sicilian Defense: Double-Dutch Gambit", "e2e4 c7c5 g1f3 g7g6 d2d4 f7f5": "Sicilian Defense: Frederico Variation", "e2e4 c7c5 g1f3 g7g6": "Sicilian Defense: Hyperaccelerated Dragon", "e2e4 c7c5 g1f3 g7g6 d2d4": "Sicilian Defense: Hyperaccelerated Fianchetto", "e2e4 c7c5 g1f3 g7g6 d2d4 f8g7": "Sicilian Defense: Hyperaccelerated Pterodactyl", "e2e4 c7c5 g1f3 g7g6 d2d4 f8g7 d4c5 d8a5 b1c3 g7c3 b2c3 a5c3": "Sicilian Defense: Hyperaccelerated Pterodactyl, Exchange Variation", "e2e4 c7c5 g1f3 e7e5": "Sicilian Defense: Jalalabad Variation", "e2e4 c7c5 g1f3 b7b6": "Sicilian Defense: Katalimov Variation", "e2e4 c7c5 g1f3 d8a5": "Sicilian Defense: Mongoose Variation", "e2e4 c7c5 g1f3 b7b5": "Sicilian Defense: Polish Gambit", "e2e4 c7c5 g1f3 d8c7": "Sicilian Defense: Quinteros Variation", "e2e4 c7c5 g1f3 a7a6": "Sicilian Defense: O'Kelly Variation", "e2e4 c7c5 g1f3 a7a6 f1e2": "Sicilian Defense: O'Kelly Variation, Aronin System", "e2e4 c7c5 g1f3 a7a6 b2b3": "Sicilian Defense: O'Kelly Variation, Kieseritzky System", "e2e4 c7c5 g1f3 a7a6 c2c4": "Sicilian Defense: O'Kelly Variation, Mar\u00f3czy Bind", "e2e4 c7c5 g1f3 a7a6 c2c4 e7e6": "Sicilian Defense: O'Kelly Variation, Mar\u00f3czy Bind, Paulsen Line", "e2e4 c7c5 g1f3 a7a6 c2c4 d7d6": "Sicilian Defense: O'Kelly Variation, Mar\u00f3czy Bind, Robatsch Line", "e2e4 c7c5 g1f3 a7a6 d2d4": "Sicilian Defense: O'Kelly Variation, Normal System", "e2e4 c7c5 g1f3 a7a6 d2d4 c5d4 f1c4": "Sicilian Defense: O'Kelly Variation, Normal System, Cortlever Gambit", "e2e4 c7c5 g1f3 a7a6 d2d4 c5d4 c2c3": "Sicilian Defense: O'Kelly Variation, Normal System, Smith-Morra Line", "e2e4 c7c5 g1f3 a7a6 d2d4 c5d4 f3d4 e7e5": "Sicilian Defense: O'Kelly Variation, Normal System, Taimanov Line", "e2e4 c7c5 g1f3 a7a6 d2d4 c5d4 d1d4": "Sicilian Defense: O'Kelly Variation, Normal System, Zagorovsky Line", "e2e4 c7c5 g1f3 a7a6 d2d3": "Sicilian Defense: O'Kelly Variation, Quiet System", "e2e4 c7c5 g1f3 a7a6 g2g3": "Sicilian Defense: O'Kelly Variation, R\u00e9ti System", "e2e4 c7c5 g1f3 a7a6 c2c3": "Sicilian Defense: O'Kelly Variation, Venice System", "e2e4 c7c5 g1f3 a7a6 c2c3 g8f6": "Sicilian Defense: O'Kelly Variation, Venice System, Barcza Line", "e2e4 c7c5 g1f3 a7a6 c2c3 d7d5 e4d5 g8f6": "Sicilian Defense: O'Kelly Variation, Venice System, Gambit Line", "e2e4 c7c5 g1f3 a7a6 c2c3 b7b5": "Sicilian Defense: O'Kelly Variation, Venice System, Ljubojevic Line", "e2e4 c7c5 g1f3 a7a6 c2c3 d7d6": "Sicilian Defense: O'Kelly Variation, Venice System, Steiner Line", "e2e4 c7c5 g1f3 a7a6 b2b4": "Sicilian Defense: O'Kelly Variation, Wing Gambit", "e2e4 c7c5 g1f3 a7a6 b1c3": "Sicilian Defense: O'Kelly Variation, Yerevan System", "e2e4 c7c5 g1f3 g8f6": "Sicilian Defense: Nimzowitsch Variation", "e2e4 c7c5 g1f3 g8f6 e4e5": "Sicilian Defense: Nimzowitsch Variation, Advance Variation", "e2e4 c7c5 g1f3 g8f6 b1c3": "Sicilian Defense: Nimzowitsch Variation, Closed Variation", "e2e4 c7c5 g1f3 g8f6 e4e5 f6d5 b1c3 d5c3": "Sicilian Defense: Nimzowitsch Variation, Exchange Variation", "e2e4 c7c5 g1f3 g8f6 e4e5 f6d5 b1c3 e7e6 c3d5 e6d5 d2d4 b8c6": "Sicilian Defense: Nimzowitsch Variation, Main Line", "e2e4 c7c5 g1f3 b8c6 b1c3 e7e5 f1c4 f8e7 d2d3 d7d6 f3d2 e7g5": "Sicilian Defense: Closed, Anti-Sveshnikov Variation, Kharlov-Kramnik Line", "e2e4 c7c5 g1f3 b8c6 b1c3 e7e5 f1c4 f8e7 d2d3 g8f6": "Sicilian Defense: Closed, Anti-Sveshnikov Variation, with Nf6", "e2e4 c7c5 g1f3 b8c6 b1c3 e7e5 f1c4 f8e7 d2d3 d7d6": "Sicilian Defense: Closed, Anti-Sveshnikov Variation, with d6", "e2e4 c7c5 g1f3 b8c6 f1b5": "Sicilian Defense: Nyezhmetdinov-Rossolimo Attack", "e2e4 c7c5 g1f3 b8c6 f1b5 c6a5 b2b4": "Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, San Francisco Gambit", "e2e4 c7c5 g1f3 b8c6": "Sicilian Defense: Old Sicilian", "e2e4 c7c5 g1f3 b8c6 b2b4": "Sicilian Defense: Portsmouth Gambit", "e2e4 c7c5 g1f3 b8c6 f1b5 c6b8": "Sicilian Defense: Rossolimo Variation, Brooklyn Retreat Defense", "e2e4 c7c5 g1f3 b8c6 f1b5 g7g6": "Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation", "e2e4 c7c5 g1f3 b8c6 f1b5 g7g6 e1g1 f8g7 c2c3 e7e5 d2d4": "Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation, Gufeld Gambit", "e2e4 c7c5 g1f3 b8c6 f1b5 g7g6 e1g1 f8g7 c2c3 g8f6 d2d4": "Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation, Lutikov Gambit", "e2e4 c7c5 g1f3 b8c6 f1b5 g7g6 e1g1 f8g7 c2c3 g8f6 d1a4": "Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation, Totsky Attack", "e2e4 c7c5 g1f3 b8c6 f1b5 g7g6 e1g1 f8g7 f1e1 e7e5 b2b4": "Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Gurgenidze Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6": "Sicilian Defense: Accelerated Dragon", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 d8c7": "Sicilian Defense: Flohr Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 e7e6": "Sicilian Defense: Franco-Sicilian Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 d8b6": "Sicilian Defense: Godiva Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 e7e5 d4b5 d7d6": "Sicilian Defense: Kalashnikov Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 e7e5": "Sicilian Defense: L\u00f6wenthal Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 d7d5": "Sicilian Defense: Nimzo-American Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 a7a6 c2c4 e7e5": "Sicilian Defense: O'Kelly Variation, Mar\u00f3czy Bind, Geller Line", "e2e4 c7c5 g1f3 b8c6 d2d4": "Sicilian Defense: Open", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4": "Sicilian Defense: Open", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4": "Sicilian Defense: Open", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 d4b5 f8c5": "Sicilian Defense: Four Knights Variation, Cobra Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e5": "Sicilian Defense: Lasker-Pelikan Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e5 d4b5 d7d6 c1g5 a7a6 b5a3 c8e6": "Sicilian Defense: Lasker-Pelikan Variation, Bird Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e5 d4c6": "Sicilian Defense: Lasker-Pelikan Variation, Exchange Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e5 d4f3": "Sicilian Defense: Lasker-Pelikan Variation, Retreat Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e5 d4b3": "Sicilian Defense: Lasker-Pelikan Variation, Schlechter Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e5 d4b5 d7d6 c1g5 a7a6 b5a3 b7b5": "Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e5 d4b5 d7d6 c1g5 a7a6 b5a3 b7b5 g5f6 g7f6 c3d5 f6f5": "Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e5 d4b5 d7d6 c1g5 a7a6 b5a3 b7b5 c3d5": "Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e5 d4b5 d7d6 c1g5 a7a6 b5a3 b7b5 g5f6 g7f6 c3d5 f8g7": "Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Novosibirsk Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e5 d4b5 d7d6 c1g5 a7a6 b5a3 b7b5 g5f6 g7f6 c3d5 f6f5 f1b5": "Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Peresypkin's Sacrifice", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6": "Sicilian Defense: Open", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 d4c6": "Sicilian Defense: Accelerated Dragon, Exchange Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 b1c3": "Sicilian Defense: Accelerated Dragon, Modern Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 b1c3 f8g7 c1e3 g8f6 f1c4": "Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 b1c3 f8g7 c1e3 g8f6 f1c4 d7d6": "Sicilian Defense: Dragon Variation, Modern Bc4 Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 c2c4": "Sicilian Defense: Accelerated Dragon, Mar\u00f3czy Bind", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 c2c4 g8f6 b1c3 c6d4 d1d4 d7d6": "Sicilian Defense: Accelerated Dragon, Mar\u00f3czy Bind, Gurgenidze Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 c2c4 f8g7": "Sicilian Defense: Accelerated Dragon, Mar\u00f3czy Bind", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 c2c4 f8g7 d4c2 d7d6 f1e2 g8h6": "Sicilian Defense: Accelerated Dragon, Simagin Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 c2c4 f8g7 c1e3": "Sicilian Defense: Accelerated Dragon, Mar\u00f3czy Bind", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 c2c4 f8g7 c1e3 g8f6 b1c3 f6g4": "Sicilian Defense: Accelerated Dragon, Mar\u00f3czy Bind, Breyer Variation", "e2e4 c7c5 g1f3 e7e6 c2c3 g8f6 e4e5 f6d5 d2d4 b8c6": "Sicilian Defense: Alapin Variation, Sherzer Variation", "e2e4 c7c5 g1f3 e7e6 c2c3": "Sicilian Defense: Delayed Alapin Variation, with e6", "e2e4 c7c5 g1f3 e7e6 d2d4 a7a6": "Sicilian Defense: Drazic Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6": "Sicilian Defense: Four Knights Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 d4c6": "Sicilian Defense: Four Knights Variation, Exchange Variation", "e2e4 c7c5 g1f3 e7e6": "Sicilian Defense: French Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 g8f6": "Sicilian Defense: French Variation, Normal", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4": "Sicilian Defense: French Variation, Open", "e2e4 c7c5 g1f3 e7e6 b2b3": "Sicilian Defense: French Variation, Westerinen Attack", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 g8f6 b1c3 d8b6": "Sicilian Defense: Gaw-Paw Variation", "e2e4 c7c5 g1f3 e7e6 b1c3 a7a6 g2g3 b7b5 d2d4 c5d4 f3d4": "Sicilian Defense: Kan Variation, Wing Attack, Fianchetto Variation", "e2e4 c7c5 g1f3 e7e6 c2c4": "Sicilian Defense: Kramnik Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 d8b6": "Sicilian Defense: Kveinis Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 d7d5": "Sicilian Defense: Marshall Counterattack", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 f8c5": "Sicilian Defense: Paulsen-Basman Defense", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 g8f6 b1c3 f8b4": "Sicilian Defense: Pin Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 g8f6 b1c3 f8b4 f1d3 e6e5": "Sicilian Defense: Pin Variation, Jaffe Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 g8f6 b1c3 f8b4 e4e5": "Sicilian Defense: Pin Variation, Koch Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 c2c3": "Sicilian Defense: Smith-Morra Gambit Deferred", "e2e4 c7c5 g1f3 e7e6 b2b4": "Sicilian Defense: Wing Gambit Deferred", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6": "Sicilian Defense: Kan Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 c2c4 g8f6 b1c3 f8b4 f1d3 b8c6": "Sicilian Defense: Kan Variation, Mar\u00f3czy Bind, Bronstein Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 c2c4 g8f6 b1c3 f8b4 f1d3 b8c6 d3c2": "Sicilian Defense: Kan Variation, Mar\u00f3czy Bind, Bronstein Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 c2c4 g7g6": "Sicilian Defense: Kan Variation, Mar\u00f3czy Bind, Hedgehog Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 c2c4": "Sicilian Defense: Kan Variation, Mar\u00f3czy Bind, R\u00e9ti Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 f1d3 g8f6 e1g1 d7d6 c2c4 g7g6": "Sicilian Defense: Kan Variation, Gipslis Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 f1d3": "Sicilian Defense: Kan Variation, Modern Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 f1d3 f8c5": "Sicilian Defense: Kan Variation, Polugaevsky Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 f1d3 g7g6": "Sicilian Defense: Kan Variation, Swiss Cheese Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 b1c3": "Sicilian Defense: Kan Variation, Knight Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 b1c3 b7b5": "Sicilian Defense: Kan Variation, Wing Attack", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 b1c3 b7b5 f1d3 d8b6 c1e3 f8c5 d1g4": "Sicilian Defense: Kan Variation, Wing Attack, Christiansen's Dream", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 b1c3 b7b5 f1d3 d8b6 d4f3": "Sicilian Defense: Kan Variation, Wing Attack, Spraggett Attack", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6": "Sicilian Defense: Taimanov Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 d4b5 d7d6 c2c4 g8f6 b1c3 a7a6 b5a3 d6d5": "Sicilian Defense: Taimanov Variation, Gary Gambit", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 d4b5 d7d6 c2c4 g8f6 b1c3 a7a6 b5a3 f8e7 f1e2 e8g8 e1g1 b7b6": "Sicilian Defense: Taimanov Variation, Modern Line", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 d4b5": "Sicilian Defense: Taimanov Variation, Sz\u00e9n Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 b1c3 g8f6 d4b5 f8b4 b5d6": "Sicilian Defense: Taimanov Variation, American Attack", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 b1c3": "Sicilian Defense: Taimanov Variation, Normal Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 b1c3 a7a6": "Sicilian Defense: Taimanov Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 b1c3 d8c7": "Sicilian Defense: Taimanov Variation, Bastrikov Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 b1c3 d8c7 d4b5 c7b8 c1e3 a7a6 e3b6": "Sicilian Defense: Taimanov Variation, Bastrikov Variation, Ponomariov Gambit", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 b1c3 d8c7 c1e3": "Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 b1c3 d8c7 c1e3 a7a6 f1e2": "Sicilian Defense: Taimanov Variation, Bastrikov Variation", "e2e4 c7c5 g1f3 d7d6 d2d4": "Sicilian Defense", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4": "Sicilian Defense", "e2e4 c7c5 g1f3 d7d6 c2c3 g8f6 f1e2 b8c6 d2d4 c5d4 c3d4 f6e4 d4d5 d8a5 b1c3 e4c3 b2c3": "Sicilian Defense: Delayed Alapin Variation, Basman-Palatnik Double Gambit", "e2e4 c7c5 g1f3 d7d6 c2c3 g8f6 f1e2 b8c6 d2d4 c5d4 c3d4 f6e4": "Sicilian Defense: Delayed Alapin Variation, Basman-Palatnik Gambit", "e2e4 c7c5 g1f3 d7d6 c2c3": "Sicilian Defense: Delayed Alapin Variation, with d6", "e2e4 c7c5 g1f3 d7d6 f1d3": "Sicilian Defense: Kopec System", "e2e4 c7c5 g1f3 d7d6 g2g3 b7b5": "Sicilian Defense: Kotov Gambit", "e2e4 c7c5 g1f3 d7d6": "Sicilian Defense: Modern Variations", "e2e4 c7c5 g1f3 d7d6 d2d4 g8f6": "Sicilian Defense: Modern Variations, Anti-Qxd4 Move Order", "e2e4 c7c5 g1f3 d7d6 d2d4 g8f6 d4c5 f6e4": "Sicilian Defense: Modern Variations, Anti-Qxd4 Move Order Accepted", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 c2c3": "Sicilian Defense: Modern Variations, Tartakower", "e2e4 c7c5 g1f3 d7d6 b2b4": "Sicilian Defense: Wing Gambit, Deferred Variation", "e2e4 c7c5 g1f3 d7d6 f1b5": "Sicilian Defense: Moscow Variation", "e2e4 c7c5 g1f3 d7d6 f1b5 b8c6 e1g1 c8d7 d1e2 g7g6 e4e5": "Sicilian Defense: Moscow Variation, Dorfman Gambit", "e2e4 c7c5 g1f3 d7d6 f1b5 b8c6 e1g1 c8d7 c2c3 g8f6 f1e1 a7a6 b5c6 d7c6 d2d4 c6e4 c1g5": "Sicilian Defense: Moscow Variation, Moscow Gambit", "e2e4 c7c5 g1f3 d7d6 f1b5 c8d7 b5d7 d8d7 e1g1 b8c6 c2c3 g8f6 d2d4": "Sicilian Defense: Moscow Variation, Haag Gambit", "e2e4 c7c5 g1f3 d7d6 f1b5 c8d7": "Sicilian Defense: Moscow Variation, Main Line", "e2e4 c7c5 g1f3 d7d6 f1b5 c8d7 b5d7 d8d7 c2c4": "Sicilian Defense: Moscow Variation, Sokolsky Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 d1d4": "Sicilian Defense: Chekhover Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 d1d4 b8c6 f1b5 d8d7": "Sicilian Defense: Chekhover Variation, Zaitsev Defense", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g7g6": "Sicilian Defense: Dragon Variation, Accelerated Dragon", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 f1c4": "Sicilian Defense: Modern Variations, Ginsberg Gambit", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6": "Sicilian Defense: Modern Variations, Main Line", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 f2f3": "Sicilian Defense: Prins Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 f2f3 e7e5 f1b5": "Sicilian Defense: Prins Variation, Venice Attack", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6": "Sicilian Defense: Classical Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 g2g3": "Sicilian Defense: Classical Variation, Fianchetto Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 c8d7": "Sicilian Defense: Kupreichik Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 d4e2": "Sicilian Defense: Spielmann Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e5 f1b5": "Sicilian Defense: Venice Attack", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f1d3": "Sicilian Defense: Yates Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f1c4 d8b6": "Sicilian Defense: Classical Variation, Anti-Sozin Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 f1c4": "Sicilian Defense: Classical Variation, Sozin Attack", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f1c4 g7g6 d4c6 b7c6 e4e5": "Sicilian Defense: Magnus Smith Trap", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 f1e2 e7e5": "Sicilian Defense: Boleslavsky Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f1e2 e7e5 d4c6": "Sicilian Defense: Boleslavsky Variation, Louma Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 f1e2": "Sicilian Defense: Classical Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 f1e2 c6d4 d1d4 g7g6": "Sicilian Defense: Classical Variation, Dragon Transfer", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f1e2 e7e5 d4b3": "Sicilian Defense: Boleslavsky Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5": "Sicilian Defense: Richter-Rauzer Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 c1g5 g7g6": "Sicilian Defense: Richter-Rauzer Variation, Dragon Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 c8d7": "Sicilian Defense: Richter-Rauzer Variation, Modern Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 c1g5 c8d7 d1d2": "Sicilian Defense: Richter-Rauzer Variation, Modern Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6": "Sicilian Defense: Richter-Rauzer Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d3": "Sicilian Defense: Richter-Rauzer Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d4c6": "Sicilian Defense: Richter-Rauzer Variation, Exchange Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 c1g5 e7e6 d4b3": "Sicilian Defense: Richter-Rauzer Variation, Podebrady Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 f1b5": "Sicilian Defense: Richter-Rauzer Variation, Vitolins Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 f8e7": "Sicilian Defense: Richter-Rauzer Variation, Classical Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 f8e7 e1c1 c6d4 d2d4 a7a6 f2f4 b7b5": "Sicilian Defense: Richter-Rauzer Variation, Classical Variation, Kantscher Line", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 d8b6": "Sicilian Defense: Richter-Rauzer Variation, Ivanov Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2": "Sicilian Defense: Richter-Rauzer Variation, Traditional Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 c1g5 e7e6 d1d2 f8e7 e1c1 e8g8 f2f4 e6e5": "Sicilian Defense: Richter-Rauzer Variation, Classical Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 f8e7 e1c1 e8g8 f2f4": "Sicilian Defense: Richter-Rauzer Variation, Classical Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 f8e7 e1c1 e8g8 f2f4 c6d4 d2d4": "Sicilian Defense: Richter-Rauzer Variation, Classical Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 f8e7 e1c1 e8g8 f2f4 c6d4": "Sicilian Defense: Richter-Rauzer Variation, Rauzer Attack", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 a7a6": "Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation, Early Deviations", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 c1g5 e7e6 d1d2 a7a6 e1c1 c8d7": "Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 c1g5 e7e6 d1d2 a7a6 e1c1 c8d7 f2f4 f8e7": "Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 c1g5 e7e6 d1d2 a7a6 e1c1 c8d7 f2f4 f8e7 d4f3 b7b5 g5f6": "Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation, Nyezhmetdinov Attack", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6": "Sicilian Defense: Dragon Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 f1e2": "Sicilian Defense: Dragon Variation, Classical Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 g2g3": "Sicilian Defense: Dragon Variation, Fianchetto Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 f2f4": "Sicilian Defense: Dragon Variation, Levenfish Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 f2f4 b8d7": "Sicilian Defense: Dragon Variation, Levenfish Variation, Main Line", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3": "Sicilian Defense: Dragon Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2": "Sicilian Defense: Dragon Variation, Classical Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6": "Sicilian Defense: Dragon Variation, Classical Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6 d4b3": "Sicilian Defense: Dragon Variation, Classical Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f1e2 g7g6 c1e3 f8g7 d1d2": "Sicilian Defense: Dragon Variation, Classical Variation, Amsterdam Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f1e2 g7g6 c1e3 f8g7 d1d2 e8g8 e1c1": "Sicilian Defense: Dragon Variation, Classical Variation, Grigoriev Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 f1e2 f8g7 e1g1 b8c6 c1e3": "Sicilian Defense: Dragon Variation, Classical Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 f1e2 f8g7 e1g1 e8g8 c1e3 b8c6 d1d2": "Sicilian Defense: Dragon Variation, Classical Variation, Battery Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 c1e3 f8g7 f1e2 g8f6 b1c3 e8g8 e1g1 d7d6 f2f4 d8b6 e4e5": "Sicilian Defense: Dragon Variation, Classical Variation, Zollner Gambit", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 b1c3 f8g7 c1e3 g8f6 f1e2 e8g8 e1g1 d7d6 d4b3 a7a5": "Sicilian Defense: Dragon Variation, Classical Variation, Alekhine Line", "e2e4 c7c5 g1f3 g7g6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f1e2 f8g7 e1g1 e8g8 c1e3 b8c6 d4b3 c8e6 f2f4 c6a5 f4f5 e6c4 e2d3 c4d3 c2d3 d6d5": "Sicilian Defense: Dragon Variation, Classical Variation, Bernard Defense", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 f1e2 f8g7 e1g1 e8g8 c1e3 b8c6 d4b3 c8e6 f2f4 c6a5": "Sicilian Defense: Dragon Variation, Classical Variation, Mar\u00f3czy Line", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 f1e2 f8g7 e1g1 e8g8 c1e3 b8c6 d4b3": "Sicilian Defense: Dragon Variation, Classical Variation, Normal Line", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 b1c3 f8g7 c1e3 g8f6 f1e2 e8g8 d4b3 d7d6 e1g1 c8e6 f2f4 c6a5 f4f5 e6c4 e2d3": "Sicilian Defense: Dragon Variation, Classical Variation, Spielmann Variation", "e2e4 c7c5 b1c3 d7d6 f2f4 b8c6 g1f3 g7g6 d2d4 c5d4 f3d4 f8g7 c1e3 g8f6 f1e2 e8g8 d4b3 c8e6 e1g1 c6a5 f4f5 e6c4 b3a5 c4e2 d1e2 d8a5 g2g4": "Sicilian Defense: Dragon Variation, Classical Variation, Stockholm Attack", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 f1e2 f8g7 e1g1 e8g8 c1e3 b8c6 d4b3 c8e6 f2f4 d8c8": "Sicilian Defense: Dragon Variation, Classical Variation, Tartakower Line", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 b8c6": "Sicilian Defense: Dragon Variation, Yugoslav Attack, Belezky Line", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3": "Sicilian Defense: Dragon Variation, Yugoslav Attack, Early Deviations", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 e8g8": "Sicilian Defense: Dragon Variation, Yugoslav Attack", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 e8g8 d1d2 b8c6": "Sicilian Defense: Dragon Variation, Yugoslav Attack", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 b8c6 d1d2 e8g8 e1c1": "Sicilian Defense: Dragon Variation, Yugoslav Attack, Modern Line", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 e8g8 d1d2 b8c6 g2g4": "Sicilian Defense: Dragon Variation, Yugoslav Attack, Panov Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 e8g8 d1d2 b8c6 f1c4 c8d7": "Sicilian Defense: Dragon Variation, Yugoslav Attack", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 e8g8 d1d2 b8c6 f1c4 a7a5": "Sicilian Defense: Dragon Variation, Yugoslav Attack, Byrne Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 b8c6 d1d2 e8g8 f1c4 c6d4 e3d4 c8e6": "Sicilian Defense: Dragon Variation, Yugoslav Attack, Czerniak Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 e8g8 d1d2 b8c6 f1c4": "Sicilian Defense: Dragon Variation, Yugoslav Attack, Main Line", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 b8c6 d1d2 e8g8 f1c4 f6d7": "Sicilian Defense: Dragon Variation, Yugoslav Attack, Sosonko Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 e8g8 d1d2 b8c6 f1c4 c8d7 e1c1": "Sicilian Defense: Dragon Variation, Yugoslav Attack", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 e8g8 d1d2 b8c6 f1c4 c8d7 e1c1 a8c8": "Sicilian Defense: Dragon Variation, Yugoslav Attack, Old Line", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 e8g8 d1d2 b8c6 f1c4 c8d7 h2h4 d8a5 e1c1 f8c8 c4b3": "Sicilian Defense: Dragon Variation, Yugoslav Attack", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 e8g8 d1d2 b8c6 f1c4 c8d7 e1c1 d8a5 h2h4 f8c8 c4b3 h7h5": "Sicilian Defense: Dragon Variation, Yugoslav Attack, Soltis Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6": "Sicilian Defense: Scheveningen Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1e3 e7e6 d1d2": "Sicilian Defense: Scheveningen Variation, English Attack, with Qd2", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 g2g3": "Sicilian Defense: Scheveningen Variation, Fianchetto Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f1b5": "Sicilian Defense: Scheveningen Variation, Vitolins Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 g2g4": "Sicilian Defense: Scheveningen Variation, Keres Attack", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f2f4": "Sicilian Defense: Scheveningen Variation, Matanovic Attack", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f2f4 b8c6 c1e3 f8e7 d1f3": "Sicilian Defense: Scheveningen Variation, Tal Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f1e2": "Sicilian Defense: Scheveningen Variation, Classical Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 b1c3 d7d6 f1e2 g8f6": "Sicilian Defense: Scheveningen Variation, Modern Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f1e2 f8e7 e1g1 e8g8 f2f4 b8c6 c1e3": "Sicilian Defense: Scheveningen Variation, Modern Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f1e2 f8e7 e1g1 e8g8 f2f4 b8c6 c1e3 c8d7 d4b3": "Sicilian Defense: Scheveningen Variation, Modern Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 f1e2 e7e6 e1g1 b8d7": "Sicilian Defense: Najdorf Variation, Scheveningen Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 f1e2 e7e6": "Sicilian Defense: Scheveningen Variation, Classical Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 f1e2 e7e6 e1g1 d8c7": "Sicilian Defense: Scheveningen Variation, Classical Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 b1c3 d8c7 f1e2 a7a6 e1g1 g8f6 c1e3 f8e7 f2f4 d7d6 d1e1 e8g8": "Sicilian Defense: Scheveningen Variation, Classical Main Line", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 f2f4 e7e6 f1e2 d8c7 e1g1 b8c6": "Sicilian Defense: Scheveningen Variation, Classical Variation, Paulsen Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 b1c3 d8c7 f1e2 a7a6 e1g1 g8f6 c1e3 d7d6 f2f4": "Sicilian Defense: Scheveningen Variation, Classical Variation, Paulsen Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 b1c3 d8c7 f1e2 a7a6 e1g1 g8f6 g1h1 f8e7 f2f4 d7d6 a2a4": "Sicilian Defense: Scheveningen Variation, Classical Variation, Paulsen Variation", "e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f1c4": "Sicilian Defense: Sozin Attack", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 f1c4 e7e6 c4b3 b7b5": "Sicilian Defense: Sozin Attack, Flank Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f1c4 e7e6 c4b3 f8e7 c1e3 e8g8 f2f4": "Sicilian Defense: Sozin Attack, Fischer Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f1c4 e7e6": "Sicilian Defense: Sozin Attack, Leonhardt Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f1c4 e7e6 c1e3": "Sicilian Defense: Sozin Attack, Main Line", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 f1c4 e7e6 c1e3 f8e7 c4b3 e8g8 e1g1 c6a5 f2f4 b7b6": "Sicilian Defense: Sozin Attack, Main Line, Sherbakov Variation", "e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f1c4 e7e6 c1e3 f8e7 d1e2": "Sicilian Defense: Velimirovic Attack", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6": "Sicilian Defense: Najdorf Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 h2h3": "Sicilian Defense: Najdorf Variation, Adams Attack", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 g2g4": "Sicilian Defense: Najdorf Variation, Dekker Gambit", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1e3": "Sicilian Defense: Najdorf Variation, English Attack", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1e3 f6g4": "Sicilian Defense: Najdorf Variation, English Attack, Anti-English", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 h1g1": "Sicilian Defense: Najdorf Variation, Freak Attack", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 f1c4": "Sicilian Defense: Najdorf Variation, Lipnitsky Attack", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1e3 e7e6 g2g4": "Sicilian Defense: Scheveningen Variation, Delayed Keres Attack", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1e3 e7e6 g2g4 e6e5 d4f5 g7g6 g4g5": "Sicilian Defense: Scheveningen Variation, Delayed Keres Attack, Perenyi Gambit", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1e3 e7e6 f2f3": "Sicilian Defense: Scheveningen Variation, English Attack, with f3", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 g2g3": "Sicilian Defense: Najdorf Variation, Zagreb Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 f1e2": "Sicilian Defense: Najdorf Variation, Opocensky Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 f1e2 e7e5 d4b3 f8e7 e1g1 c8e6": "Sicilian Defense: Najdorf Variation, Opocensky Variation, Modern Line", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 f1e2 e7e5 d4b3 f8e7 e1g1 e8g8": "Sicilian Defense: Najdorf Variation, Opocensky Variation, Traditional Line", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 f2f4": "Sicilian Defense: Najdorf Variation, Amsterdam Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5": "Sicilian Defense: Najdorf Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 b8d7 f1c4 d8a5 d1d2 e7e6 e1c1 b7b5 c4b3 c8b7 h1e1 d7c5 e4e5": "Sicilian Defense: Najdorf Variation, Ivkov Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6": "Sicilian Defense: Najdorf Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4": "Sicilian Defense: Najdorf Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 b8c6": "Sicilian Defense: Najdorf Variation, Neo-Classical Defense", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 b7b5": "Sicilian Defense: Najdorf Variation, Polugaevsky Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 b7b5 e4e5 d6e5 f4e5 d8c7 d1e2": "Sicilian Defense: Najdorf Variation, Polugaevsky Variation, Simagin Line", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 d8b6 d1d2 b6b2 a1b1 b2a3": "Sicilian Defense: Najdorf Variation, Poisoned Pawn Accepted", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 d8b6": "Sicilian Defense: Najdorf Variation, Poisoned Pawn Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 f8e7": "Sicilian Defense: Najdorf Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 f8e7 d1f3 h7h6 g5h4 d8c7": "Sicilian Defense: Najdorf Variation, Browne Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 f8e7 d1f3 h7h6 g5h4 g7g5": "Sicilian Defense: Najdorf Variation, Goteborg Variation", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 f8e7 d1f3 d8c7": "Sicilian Defense: Najdorf Variation, Traditional Line", "e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 f8e7 d1f3 d8c7 e1c1 b8d7": "Sicilian Defense: Najdorf Variation, Main Line", "e2e4 e7e6": "French Defense", "e2e4 e7e6 d2d4 d7d5": "French Defense", "e2e4 e7e6 d2d4 d7d5 c1e3": "French Defense: Alapin Gambit", "e2e4 e7e6 d2d4 b7b5": "French Defense: Baeuerle Gambit", "e2e4 e7e6 b2b4": "French Defense: Banzai-Leong Gambit", "e2e4 e7e6 b2b4 f8b4 e4e5": "French Defense: Banzai-Leong Gambit, Pinova Gambit", "e2e4 e7e6 f1b5": "French Defense: Bird Invitation", "e2e4 e7e6 d2d4 d7d5 g1f3 d5e4 f3e5": "French Defense: Carlson Gambit", "e2e4 e7e6 d1e2": "French Defense: Chigorin Variation", "e2e4 e7e6 d2d4 d7d5 c2c4": "French Defense: Diemer-Duhm Gambit", "e2e4 e7e6 d2d4 d7d5 c2c4 d5e4": "French Defense: Diemer-Duhm Gambit Accepted", "e2e4 e7e6 d2d4 f7f5": "French Defense: Franco-Hiva Gambit", "e2e4 e7e6 d2d4 f7f5 e4f5": "French Defense: Franco-Hiva Gambit Accepted", "e2e4 e7e6 d2d4 c7c5": "French Defense: Franco-Sicilian Defense", "e2e4 e7e6 d2d4 d7d5 d1e2 e6e5 f2f4 e5f4": "French Defense: Hoffmann Gambit", "e2e4 e7e6 b2b3": "French Defense: Horwitz Attack", "e2e4 e7e6 b2b3 d7d5 c1b2": "French Defense: Horwitz Attack, Papa-Ticulat Gambit", "e2e4 e7e6 d2d3": "French Defense: King's Indian Attack", "e2e4 e7e6 d2d3 f7f5": "French Defense: King's Indian Attack, Franco-Hiva Gambit", "e2e4 e7e6 g1f3": "French Defense: Knight Variation", "e2e4 e7e6 g1f3 f7f5": "French Defense: Knight Variation, Franco-Hiva Gambit", "e2e4 e7e6 f2f4": "French Defense: La Bourdonnais Variation", "e2e4 e7e6 f2f4 d7d5 g1f3 d5e4": "French Defense: La Bourdonnais Variation, Reuter Gambit", "e2e4 e7e6 d2d4 g8f6": "French Defense: Mediterranean Defense", "e2e4 e7e6 d2d4 d7d5 g1h3": "French Defense: Morphy Gambit", "e2e4 e7e6 d2d4": "French Defense: Normal Variation", "e2e4 e7e6 c2c4 d7d5 c4d5 e6d5 d1b3": "French Defense: Orthoschnapp Gambit", "e2e4 e7e6 b1c3 d7d5 f2f4": "French Defense: Pelikan Variation", "e2e4 e7e6 d2d4 d7d5 g1f3": "French Defense: Perseus Gambit", "e2e4 e7e6 b1c3": "French Defense: Queen's Knight", "e2e4 e7e6 d2d3 d7d5 b1d2 g8f6 g1f3 b8c6 f1e2": "French Defense: Reversed Philidor Formation", "e2e4 e7e6 g2g3": "French Defense: R\u00e9ti-Spielmann Attack", "e2e4 e7e6 d2d4 d7d5 f1d3": "French Defense: Schlechter Variation", "e2e4 e7e6 d2d4 a7a6": "French Defense: St. George Defense", "e2e4 e7e6 d2d4 a7a6 c2c4 b7b5": "French Defense: St. George Defense, Sanky-George Gambit", "e2e4 e7e6 d2d4 a7a6 c2c4 b7b5 c4b5 a6b5": "French Defense: St. George Defense, St. George Gambit", "e2e4 e7e6 d2d4 a7a6 c2c4": "French Defense: St. George Defense, Three Pawn Attack", "e2e4 e7e6 d2d4 a7a6 g1f3 b7b5 f1d3 c7c5 c2c3 c8b7 e1g1 g8f6": "French Defense: St. George Defense, Traditional Line", "e2e4 e7e6 c2c4": "French Defense: Steiner Variation", "e2e4 e7e6 e4e5": "French Defense: Steinitz Attack", "e2e4 e7e6 g1f3 d7d5 b1c3": "French Defense: Two Knights Variation", "e2e4 e7e6 g1f3 d7d5 e4e5 c7c5 b2b4": "French Defense: Wing Gambit", "d2d4 e7e6 e2e4 d7d6": "Rat Defense: Small Center Defense", "e2e4 e7e6 d2d4 d7d5 e4d5": "French Defense: Exchange Variation", "e2e4 e7e6 d2d4 d7d5 e4d5 e6d5 b1c3 g8f6 c1g5 b8c6": "French Defense: Exchange Variation, Bogoljubow Variation", "e2e4 e7e6 d2d4 d7d5 e4d5 e6d5 c2c4": "French Defense: Exchange Variation, Monte Carlo Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 e4d5 e6d5 c1g5": "French Defense: Exchange Variation, Svenonius Variation", "e2e4 e7e6 d2d4 d7d5 e4e5": "French Defense: Advance Variation", "e2e4 e7e6 d2d4 d7d5 e4e5 c7c5": "French Defense: Advance Variation", "e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 c2c3": "French Defense: Advance Variation", "e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 c2c3 b8c6": "French Defense: Advance Variation", "e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 c2c3 b8c6 g1f3 c8d7": "French Defense: Advance Variation, Euwe Variation", "e2e4 e7e6 d2d4 d7d5 e4e5 c8d7": "French Defense: Advance Variation, Extended Bishop Swap", "e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 b2b4": "French Defense: Advance Variation, Frenkel Gambit", "e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 c2c3 b8c6 g1f3 d8b6 a2a3 g8h6": "French Defense: Advance Variation, Lputian Variation", "e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 c2c3 b8c6 g1f3 d8b6 a2a3": "French Defense: Advance Variation, Main Line", "e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 c2c3 b8c6 g1f3 d8b6 f1d3": "French Defense: Advance Variation, Milner-Barry Gambit", "e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 d1g4": "French Defense: Advance Variation, Nimzowitsch Attack", "e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 d1g4 c5d4 g1f3": "French Defense: Advance Variation, Nimzowitsch Gambit", "e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 g1f3": "French Defense: Advance Variation, Nimzowitsch System", "e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 c2c3 b8c6 g1f3": "French Defense: Advance Variation, Paulsen Attack", "e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 g1f3 c5d4 f1d3": "French Defense: Advance Variation, Ruisdonk Gambit", "e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 d4c5": "French Defense: Advance Variation, Steinitz Variation", "e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 c2c3 d8b6 g1f3 c8d7": "French Defense: Advance Variation, Wade Variation", "e2e4 e7e6 d2d4 d7d5 b1d2 b8c6 c2c3 d5e4 d2e4 e6e5": "French Defense: Guimard Variation, Thunderbunny Variation", "e2e4 e7e6 d2d4 d7d5 b1d2": "French Defense: Tarrasch Variation", "e2e4 e7e6 d2d4 d7d5 b1d2 b8c6": "French Defense: Tarrasch Variation, Guimard Defense", "e2e4 e7e6 d2d4 d7d5 b1d2 f7f5": "French Defense: Tarrasch Variation, Haberditz Variation", "e2e4 e7e6 d2d4 d7d5 b1d2 a7a6": "French Defense: Tarrasch Variation, Modern System", "e2e4 e7e6 d2d4 d7d5 b1d2 f8e7": "French Defense: Tarrasch Variation, Morozevich Variation", "e2e4 e7e6 d2d4 d7d5 b1d2 b8c6 g1f3 g8f6": "French Defense: Tarrasch Variation, Guimard Defense, Main Line", "e2e4 e7e6 d2d4 d7d5 b1d2 g8f6 e4e5 f6d7 f1d3 c7c5 c2c3 b7b6": "French Defense: Tarrasch Variation, Botvinnik Variation", "e2e4 e7e6 d2d4 d7d5 b1d2 g8f6": "French Defense: Tarrasch Variation, Closed Variation", "e2e4 e7e6 d2d4 d7d5 b1d2 g8f6 e4e5 f6d7 f1d3 c7c5 c2c3 b8c6": "French Defense: Tarrasch Variation, Closed Variation", "e2e4 e7e6 d2d4 d7d5 b1d2 g8f6 e4e5 f6d7 f2f4": "French Defense: Tarrasch Variation, Pawn Center Variation", "e2e4 e7e6 d2d4 d7d5 b1d2 g8f6 e4e5 f6d7 f1d3 c7c5 c2c3 b8c6 g1e2 c5d4 c3d4": "French Defense: Tarrasch Variation, Closed Variation, Main Line", "e2e4 e7e6 d2d4 d7d5 b1d2 g8f6 e4e5 f6d7 f1d3 c7c5 c2c3 b8c6 g1e2 c5d4 c3d4 d7b6": "French Defense: Tarrasch Variation, Leningrad Variation", "e2e4 e7e6 d2d4 d7d5 b1d2 c7c5 e4d5 d8d5": "French Defense: Tarrasch Variation, Chistyakov Defense", "e2e4 e7e6 d2d4 d7d5 b1d2 c7c5 e4d5 d8d5 g1f3 c5d4 f1c4 d5d6 e1g1 g8f6 d2b3 b8c6 b3d4 c6d4 f3d4 a7a6": "French Defense: Tarrasch Variation, Chistyakov Defense, Modern Line", "e2e4 e7e6 d2d4 d7d5 b1d2 c7c5 e4d5 d8d5 g1f3 c5d4 f1c4 d5d8": "French Defense: Tarrasch Variation, Eliskases Variation", "e2e4 e7e6 d2d4 d7d5 b1d2 c7c5": "French Defense: Tarrasch Variation, Open System", "e2e4 e7e6 d2d4 d7d5 b1d2 c7c5 g1f3": "French Defense: Tarrasch Variation, Open System, Euwe-Keres Line", "e2e4 e7e6 d2d4 d7d5 b1d2 c7c5 e4d5 g8f6": "French Defense: Tarrasch Variation, Open System, Shaposhnikov Gambit", "e2e4 e7e6 d2d4 d7d5 b1d2 c7c5 c2c3": "French Defense: Tarrasch Variation, Open System, S\u00fcchting Line", "e2e4 e7e6 d2d4 d7d5 b1d2 c7c5 e4d5 e6d5": "French Defense: Tarrasch Variation, Open System", "e2e4 e7e6 d2d4 d7d5 b1d2 c7c5 e4d5 e6d5 g1f3 c5c4": "French Defense: Tarrasch Variation, Open System, Advance Line", "e2e4 e7e6 d2d4 d7d5 b1d2 c7c5 e4d5 e6d5 g1f3 b8c6": "French Defense: Tarrasch Variation, Open System, Main Line", "e2e4 e7e6 d2d4 d7d5 b1c3 b8c6 e4d5": "French Defense: Classical Variation, Svenonius Variation", "e2e4 e7e6 d2d4 d7d5 b1c3": "French Defense: Paulsen Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 d5e4": "French Defense: Rubinstein Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 d5e4 c3e4 b8d7": "French Defense: Rubinstein Variation, Blackburne Defense", "e2e4 e7e6 d2d4 d7d5 b1c3 d5e4 c3e4 b8d7 g1f3 g8f6 e4f6 d7f6 f3e5": "French Defense: Rubinstein Variation, Capablanca Line", "e2e4 e7e6 d2d4 d7d5 b1c3 d5e4 c3e4 e6e5": "French Defense: Rubinstein Variation, Ellis Gambit", "e2e4 e7e6 d2d4 d7d5 b1c3 d5e4 c3e4 c8d7 g1f3 d7c6": "French Defense: Rubinstein Variation, Fort Knox Variation", "e2e4 e7e6 d2d4 d7d5 b1d2 d5e4 d2e4 b8d7 g1f3 g8f6 e4f6 d7f6 c2c3": "French Defense: Rubinstein Variation, Kasparov Attack", "e2e4 e7e6 d2d4 d7d5 b1c3 d5e4 c3e4 d8d5": "French Defense: Rubinstein Variation, Maric Variation", "e2e4 c7c5 b1c3 e7e6 d2d4 d7d5": "Sicilian Defense: Marshall Gambit", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5": "French Defense: Burn Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6": "French Defense: Classical Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 d5e4 c3e4 f8e7 g5f6 e7f6 g1f3 e8g8": "French Defense: Classical Variation, Burn Variation, Main Line", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 d5e4 c3e4 f8e7 g5f6 g7f6": "French Defense: Classical Variation, Burn Variation, Morozevich Line", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 e4d5": "French Defense: Classical Variation, Delayed Exchange Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 e4e5": "French Defense: Classical Variation, Steinitz Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 f1d3": "French Defense: Classical Variation, Swiss Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1e3": "French Defense: Henneberger Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 e4e5 f6d7 f2f4 c7c5 d4c5 b8c6": "French Defense: Steinitz Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 e4e5 f6d7 f2f4 c7c5 g1f3": "French Defense: Steinitz Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 e4e5 f6d7 f2f4 c7c5 g1f3 b8c6 c1e3": "French Defense: Steinitz Variation, Boleslavsky Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 e4e5 f6d7 f2f4 c7c5 d4c5 f8c5 d1g4": "French Defense: Steinitz Variation, Bradford Attack Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 e4e5 f6d7 f2f4 c7c5 d4c5 b8c6 a2a3 f8c5 d1g4 e8g8 g1f3 f7f6": "French Defense: Steinitz Variation, Brodsky-Jones Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 e4e5 f6d7 d1g4": "French Defense: Steinitz Variation, Gledhill Attack", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4": "French Defense: MacCutcheon Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5": "French Defense: MacCutcheon Variation, Advance Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 g5h4": "French Defense: MacCutcheon Variation, Bernstein Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4d5 d8d5 g5f6 g7f6 d1d2 d5a5": "French Defense: MacCutcheon Variation, Bogoljubow Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 e5f6": "French Defense: MacCutcheon Variation, Chigorin Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 g5c1": "French Defense: MacCutcheon Variation, Dr. Olland Variation", "e2e4 e7e6 b1c3 d7d5 d2d4 g8f6 c1g5 f8b4 e4e5 h7h6 g5d2 b4c3 b2c3 f6e4 d1g4 e8f8 d2c1": "French Defense: MacCutcheon Variation, Duras Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4d5": "French Defense: MacCutcheon Variation, Exchange Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 e5f6 h6g5 f6g7 h8g8 h2h4 g5h4 d1g4": "French Defense: MacCutcheon Variation, Grigoriev Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 g5e3": "French Defense: MacCutcheon Variation, Janowski Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 g5d2 b4c3": "French Defense: MacCutcheon Variation, Lasker Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 g5d2 b4c3 b2c3 f6e4 d1g4 g7g6": "French Defense: MacCutcheon Variation, Lasker Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 g5d2 f6d7": "French Defense: MacCutcheon Variation, Tartakower Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 h2h4": "French Defense: Alekhine-Chatard Attack", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 h2h4 e7g5 h4g5 d8g5": "French Defense: Alekhine-Chatard Attack, Albin-Chatard Gambit", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 h2h4 c7c5": "French Defense: Alekhine-Chatard Attack, Breyer Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 h2h4 a7a6": "French Defense: Alekhine-Chatard Attack, Mar\u00f3czy Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 h2h4 e8g8": "French Defense: Alekhine-Chatard Attack, Spielmann Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 h2h4 f7f6": "French Defense: Alekhine-Chatard Attack, Teichmann Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6g8 g5e3 b7b6": "French Defense: Classical Variation, Frankfurt Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7": "French Defense: Classical Variation, Normal Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 g5f6": "French Defense: Classical Variation, Richter Attack", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 g5f6 e7f6 e4e5 f6e7 d1g4": "French Defense: Classical Variation, Richter Attack", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6e4": "French Defense: Classical Variation, Tartakower Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6g8": "French Defense: Classical Variation, Vistaneckis Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 g5e7 d8e7": "French Defense: Classical Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 g5e7 d8e7 c3b5": "French Defense: Classical Variation, Alapin Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 g5e7 d8e7 d1g4": "French Defense: Classical Variation, Pollock Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 g5e7 d8e7 d1d2": "French Defense: Classical Variation, Rubinstein Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 g5e7 d8e7 f2f4 e8g8 g1f3 c7c5 d1d2 b8c6 e1c1 c5c4": "French Defense: Classical Variation, Stahlberg Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 g5e7 d8e7 f2f4": "French Defense: Classical Variation, Steinitz Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 g5e7 d8e7 f1d3": "French Defense: Classical Variation, Tarrasch Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 g1e2 g8f6 c1g5": "French Defense: MacCutcheon Variation, Wolf Gambit", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4": "French Defense: Winawer Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 g1e2 d5e4 a2a3 b4c3": "French Defense: Winawer Variation, Alekhine Gambit Accepted", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 g1e2 d5e4 a2a3 b4e7 c3e4 g8f6 e2g3 e8g8 f1e2 b8c6": "French Defense: Winawer Variation, Alekhine Gambit, Alatortsev Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 g1e2 d5e4 a2a3 b4c3 e2c3 b8c6": "French Defense: Winawer Variation, Alekhine Gambit, Kan Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 g1e2": "French Defense: Winawer Variation, Alekhine-Mar\u00f3czy Gambit", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4d5": "French Defense: Winawer Variation, Delayed Exchange Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4d5 e6d5 f1d3 g8e7 d1h5": "French Defense: Winawer Variation, Exchange Variation, Canal Attack", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 c1d2": "French Defense: Winawer Variation, Fingerslip Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 c1d2 d5e4 d1g4 d8d4": "French Defense: Winawer Variation, Fingerslip Variation, Kunin Double Gambit", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 c1d2 d5e4 d1g4 g8f6 g4g7 h8g8 g7h6": "French Defense: Winawer Variation, Fingerslip Variation, Main Line", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 c1d2 g8e7 c3b1": "French Defense: Winawer Variation, Fingerslip Variation, Schwarz's Line", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 f1d3 c7c5 e4d5 d8d5 c1d2": "French Defense: Winawer Variation, Kondratiyev Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 a2a3": "French Defense: Winawer Variation, Winckelmann-Riemer Gambit", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5": "French Defense: Winawer Variation, Advance Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 d8d7": "French Defense: Winawer Variation, Petrosian Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5": "French Defense: Winawer Variation, Advance Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3": "French Defense: Winawer Variation, Advance Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 c5d4 a3b4 d4c3 g1f3": "French Defense: Winawer Variation, Advance Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 d1g4": "French Defense: Winawer Variation, Advance Variation, Moscow Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 c1d2": "French Defense: Winawer Variation, Bogoljubow Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 c1d2 g8e7 f2f4": "French Defense: Winawer Variation, Bogoljubow Variation, Icelandic Defense", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 c5d4 a3b4 d4c3": "French Defense: Winawer Variation, Mar\u00f3czy-Wallis Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4a5": "French Defense: Winawer Variation, Retreat Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4a5 b2b4 c5d4": "French Defense: Winawer Variation, Retreat Variation, Armenian Line", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4c3 b2c3": "French Defense: Winawer Variation, Advance Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4c3 b2c3 d8c7": "French Defense: Winawer Variation, Classical Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4c3 b2c3 d8a5": "French Defense: Winawer Variation, Portisch-Hook Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4c3 b2c3 g8e7": "French Defense: Winawer Variation, Advance Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4c3 b2c3 g8e7 a3a4": "French Defense: Winawer Variation, Advance Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4c3 b2c3 g8e7 d1g4": "French Defense: Winawer Variation, Poisoned Pawn Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4c3 b2c3 g8e7 d1g4 d8c7 g4g7 h8g8 g7h7 c5d4 g1e2": "French Defense: Winawer Variation, Poisoned Pawn Variation, Main Line", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4c3 b2c3 g8e7 d1g4 d8c7 g4g7 h8g8 g7h7 c5d4 e1d1": "French Defense: Winawer Variation, Poisoned Pawn Variation, Paoli Variation", "e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4c3 b2c3 g8e7 g1f3": "French Defense: Winawer Variation, Positional Variation", "f2f3 e7e5 e2e4 g8f6 f1c4": "Barnes Opening: Walkerling", "e2e4 e7e5 e1e2": "Bongcloud Attack", "e2e4 e7e5 d2d4": "Center Game", "e2e4 e7e5 c2c4": "English Opening: The Whale", "e2e4 e7e5": "King's Pawn Game", "e2e4 e7e5 g1e2": "King's Pawn Game: Alapin Opening", "e2e4 e7e5 c2c4 d7d5": "King's Pawn Game: Bavarian Gambit", "e2e4 e7e5 d2d4 d7d5": "King's Pawn Game: Beyer Gambit", "e2e4 e7e5 d2d3 f7f5": "King's Pawn Game: Clam Variation, King's Gambit Reversed", "e2e4 e7e5 d2d3 g8f6 f2f4 f8c5": "King's Pawn Game: Clam Variation, Radisch Gambit", "e2e4 e7e5 f2f3": "King's Pawn Game: King's Head Opening", "e2e4 e7e5 f2f3 g8f6 b1c3": "King's Pawn Game: King's Head Opening", "e2e4 e7e5 d2d3": "King's Pawn Game: Leonardis Variation", "e2e4 e7e5 c2c3": "King's Pawn Game: MacLeod Attack", "e2e4 e7e5 c2c3 f7f5": "King's Pawn Game: MacLeod Attack, Lasa Gambit", "e2e4 e7e5 c2c3 d7d5 d1h5 f8d6": "King's Pawn Game: MacLeod Attack, Norwalde Gambit", "e2e4 e7e5 a2a3": "King's Pawn Game: Mengarini's Opening", "e2e4 e7e5 d1f3": "King's Pawn Game: Napoleon Attack", "e2e4 e7e5 d2d4 d7d6 d4e5 c8d7": "King's Pawn Game: Philidor Gambit", "e2e4 e7e5 f1d3": "King's Pawn Game: Tortoise Opening", "e2e4 e7e5 d1h5": "King's Pawn Game: Wayward Queen Attack", "e2e4 e7e5 d1h5 g8f6": "King's Pawn Game: Wayward Queen Attack, Kiddie Countergambit", "e2e4 e7e5 d1h5 b8c6 f1c4 g8h6 d2d3 g7g6 h5f3 f7f6 g1e2 d7d5": "King's Pawn Game: Wayward Queen Attack, Mellon Gambit", "e2e4 e7e5 d2d3 d7d5 e4d5 c7c6 d5c6 b8c6": "King's Pawn Game: Weber Gambit", "e2e4 e7e5 b2b3": "King's Pawn Opening", "e2e4 e7e5 d1g4 g8f6 g4f5": "King's Pawn Opening: Speers", "e2e4 e7e5 d1e2 b8c6 c2c3 g8f6 g1f3 f8c5 d2d4 e5d4 c3d4 c6d4": "King's Pawn Opening: Van Hooydoon Gambit", "e2e4 e7e5 f1b5": "Portuguese Opening", "e2e4 e7e5 f1b5 f8c5 b2b4": "Portuguese Opening: Miguel Gambit", "e2e4 e7e5 f1b5 g8f6 d2d4": "Portuguese Opening: Portuguese Gambit", "e2e4 e7e5 d2d4 e5d4 d1d4": "Center Game", "e2e4 e7e5 d2d4 e5d4": "Center Game Accepted", "e2e4 e7e5 d2d4 e5d4 f2f4": "Center Game: Halasz-McDonnell Gambit", "e2e4 e7e5 d2d4 e5d4 f2f4 f8c5 g1f3 b8c6 c2c3": "Center Game: Halasz-McDonnell Gambit, Crocodile Variation", "e2e4 e7e5 d2d4 e5d4 g1f3": "Center Game: Kieseritzky Variation", "e2e4 e7e5 d2d4 e5d4 g1f3 c7c5": "Center Game: Kieseritzky Variation", "e2e4 e7e5 d2d4 e5d4 g1f3 c7c5 f1c4": "Center Game: Kieseritzky Variation", "e2e4 e7e5 d2d4 e5d4 g1f3 c7c5 f1c4 b7b5": "Center Game: Kieseritzky Variation", "e2e4 e7e5 d2d4 e5d4 g1f3 f8c5 c2c3": "Center Game: Lanc-Arnold Gambit", "e2e4 e7e5 d2d4 e5d4 g1f3 f8c5 c2c3 d4c3 f1c4": "Center Game: Lanc-Arnold Gambit, Schippler Gambit", "e2e4 e7e5 d2d4 e5d4 f1d3": "Center Game: Ross Gambit", "e2e4 e7e5 d2d4 e5d4 f1c4": "Center Game: von der Lasa Gambit", "e2e4 e7e5 d2d4 e5d4 c2c3": "Danish Gambit", "e2e4 e7e5 d2d4 e5d4 c2c3 d4c3 f1c4 c3b2 c1b2": "Danish Gambit Accepted", "e2e4 e7e5 d2d4 e5d4 c2c3 d4c3 f1c4 c3b2 c1b2 d8e7": "Danish Gambit Accepted: Chigorin Defense", "e2e4 e7e5 d2d4 e5d4 c2c3 d4c3 f1c4 c3b2 c1b2 g8f6": "Danish Gambit Accepted: Classical Defense", "e2e4 e7e5 d2d4 e5d4 c2c3 d4c3 f1c4 c3b2 c1b2 f8b4": "Danish Gambit Accepted: Copenhagen Defense", "e2e4 e7e5 d2d4 e5d4 c2c3 d4c3 f1c4 c3b2 c1b2 d7d5": "Danish Gambit Accepted: Schlechter Defense", "e2e4 e7e5 d2d4 e5d4 c2c3 g8e7": "Danish Gambit Accepted: Svenonius Defense", "e2e4 e7e5 d2d4 e5d4 c2c3 d7d5": "Danish Gambit Declined: Sorensen Defense", "e2e4 e7e5 d2d4 e5d4 d1d4 b8c6 d4e3 g8f6": "Center Game: Berger Variation", "e2e4 e7e5 d2d4 e5d4 d1d4 b8c6 d4e3 f8b4 c2c3 b4e7": "Center Game: Charousek Variation", "e2e4 e7e5 d2d4 e5d4 d1d4 b8c6 d4c4": "Center Game: Hall Variation", "e2e4 e7e5 d2d4 e5d4 d1d4 b8c6 d4e3 g8f6 b1c3 f8b4 c1d2 e8g8 e1c1 f8e8 f1c4 d7d6 g1h3": "Center Game: Kupreichik Variation", "e2e4 e7e5 d2d4 e5d4 d1d4 b8c6": "Center Game: Normal Variation", "e2e4 e7e5 d2d4 e5d4 d1d4 b8c6 d4e3": "Center Game: Paulsen Attack Variation", "e2e4 e7e5 d2d4 e5d4 d1d4 b8c6 d4e3 f7f5": "Center Game: l'Hermet Variation", "e2e4 e7e5 f1c4": "Bishop's Opening", "e2e4 e7e5 f1c4 b7b5 c4b5 c7c6": "Bishop's Opening: Anderssen Gambit", "e2e4 e7e5 f1c4 f8c5": "Bishop's Opening: Boi Variation", "e2e4 e7e5 f1c4 f7f5": "Bishop's Opening: Calabrese Countergambit", "e2e4 e7e5 f1c4 f7f5 d2d3": "Bishop's Opening: Calabrese Countergambit, Jaenisch Variation", "e2e4 e7e5 f1c4 f8c5 b2b4 c5b4 f2f4 e5f4 g1f3 b4e7 d2d4 e7h4 g2g3 f4g3 e1g1 g3h2 g1h1": "Bishop's Opening: Four Pawns Gambit", "e2e4 e7e5 f1c4 d7d5": "Bishop's Opening: Khan Gambit", "e2e4 e7e5 f1c4 f8c5 c2c3 d7d5": "Bishop's Opening: Lewis Countergambit", "e2e4 e7e5 f1c4 f8c5 c2c3 d7d5 c4d5 g8f6": "Bishop's Opening: Lewis Countergambit", "e2e4 e7e5 f1c4 f8c5 c2c3 d7d5 c4d5 g8f6 d2d4": "Bishop's Opening: Lewis Countergambit, Walker Variation", "e2e4 e7e5 f1c4 f8c5 d2d4": "Bishop's Opening: Lewis Gambit", "e2e4 e7e5 f1c4 c7c6 d2d4 d7d5 e4d5 c6d5 c4b5 c8d7 b5d7 b8d7 d4e5 d7e5 g1e2": "Bishop's Opening: Lisitsyn Variation", "e2e4 e7e5 f1c4 f8c5 d1e2 b8c6 c2c3 g8f6 f2f4": "Bishop's Opening: Lopez Gambit", "e2e4 e7e5 f1c4 f8c5 d1e2": "Bishop's Opening: Lopez Variation", "e2e4 e7e5 f1c4 f8c5 d1e2 g8f6 f2f4": "Bishop's Opening: Lopez Variation, Lopez Gambit", "e2e4 e7e5 f1c4 f8c5 b2b4": "Bishop's Opening: McDonnell Gambit", "e2e4 e7e5 f1c4 f8c5 b2b4 c5b4 c2c3": "Bishop's Opening: McDonnell Gambit, La Bourdonnais-Denker Gambit", "e2e4 e7e5 f1c4 f8c5 b2b4 c5b4 f2f4": "Bishop's Opening: McDonnell Gambit, McDonnell Double Gambit", "e2e4 e7e5 f1c4 c7c6": "Bishop's Opening: Philidor Counterattack", "e2e4 e7e5 f1c4 f8c5 c2c3": "Bishop's Opening: Philidor Variation", "e2e4 e7e5 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 e4e5 d7d5 e5f6 d5c4 d1h5 e8g8": "Bishop's Opening: Pratt Variation", "e2e4 e7e5 f1c4 f8c5 f2f4": "Bishop's Opening: Stein Gambit", "e2e4 e7e5 f1c4 b7b5 c4b5 f7f5": "Bishop's Opening: Thorold Gambit", "e2e4 e7e5 f1c4 f8c5 c2c3 d8g5": "Bishop's Opening: del Rio Variation", "e2e4 e7e5 f1c4 g8f6": "Bishop's Opening: Berlin Defense", "e2e4 e7e5 f1c4 g8f6 f2f4": "Bishop's Opening: Berlin Defense, Greco Gambit", "e2e4 e7e5 f1c4 g8f6 d2d3 f8e7 g1f3 e8g8": "Bishop's Opening: Kitchener Folly", "e2e4 e7e5 f1c4 g8f6 f2f3 f8c5 g1e2 b8c6 b2b4": "Bishop's Opening: Krejcik Gambit", "e2e4 e7e5 f1c4 g8f6 g1e2 f6e4 e2c3": "Bishop's Opening: Pachman Gambit", "e2e4 e7e5 f1c4 g8f6 d2d4": "Bishop's Opening: Ponziani Gambit", "e2e4 e7e5 f1c4 g8f6 d2d4 e5d4 g1f3 d7d5 e4d5 f8b4 c2c3 d8e7": "Bishop's Opening: Urusov Gambit, Panov Variation", "e2e4 e7e5 f1c4 g8f6 d2d3 b8c6 b1c3": "Bishop's Opening: Vienna Hybrid", "e2e4 e7e5 f1c4 g8f6 d2d4 e5d4 c2c3": "Bishop's Opening: Warsaw Gambit", "e2e4 e7e5 b1c3 b8c6 f2f4": "Vienna Gambit, with Max Lange Defense", "e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 g1f3 f8e7": "Vienna Gambit, with Max Lange Defense: Cunningham Defense", "e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5": "Vienna Gambit, with Max Lange Defense: Hamppe-Allgaier Gambit", "e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 d7d6": "Vienna Gambit, with Max Lange Defense: Hamppe-Allgaier Gambit, Alapin Variation", "e2e4 e7e5 f2f4 e5f4 g1f3 b8c6 b1c3 g7g5 h2h4 g5g4 f3g5 h7h6 g5f7 e8f7 d2d4": "Vienna Gambit, with Max Lange Defense: Hamppe-Allgaier Gambit, Thorold Variation", "e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 g4f3": "Vienna Gambit, with Max Lange Defense: Hamppe-Muzio Gambit", "e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 g1f3": "Vienna Gambit, with Max Lange Defense: Knight Variation", "e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 g1f3 g7g5 d2d4": "Vienna Gambit, with Max Lange Defense: Pierce Gambit", "e2e4 e7e5 b1c3 b8c6 f2f4 f8c5 f4e5 d7d6": "Vienna Gambit, with Max Lange Defense: Quelle Gambit", "e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 d2d4": "Vienna Gambit, with Max Lange Defense: Steinitz Gambit", "e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 d2d4 d8h4 e1e2 b7b6": "Vienna Gambit, with Max Lange Defense: Steinitz Gambit, Fraser-Minckwitz Defense", "e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 d2d4 d8h4 e1e2": "Vienna Gambit, with Max Lange Defense: Steinitz Gambit, Main Line", "e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 d2d4 d8h4 e1e2 d7d6": "Vienna Gambit, with Max Lange Defense: Steinitz Gambit, Paulsen Defense", "e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 d2d4 d8h4 e1e2 g7g5": "Vienna Gambit, with Max Lange Defense: Steinitz Gambit, S\u00f6rensen Defense", "e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 d2d4 d8h4 e1e2 d7d5": "Vienna Gambit, with Max Lange Defense: Steinitz Gambit, Zukertort Defense", "e2e4 e7e5 b1c3": "Vienna Game", "e2e4 e7e5 b1c3 f8c5": "Vienna Game: Anderssen Defense", "e2e4 e7e5 b1c3 b8c6 d2d4": "Vienna Game: Fyfe Gambit", "e2e4 e7e5 b1c3 f8c5 d1g4": "Vienna Game: Giraffe Attack", "e2e4 e7e5 b1c3 f8c5 c3a4": "Vienna Game: Hamppe-Meitner Variation", "e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1": "Vienna Game: Hamppe-Muzio Gambit", "e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 g4f3 d1f3 c6e5 f3f4 d8f6": "Vienna Game: Hamppe-Muzio, Dubois Variation", "e2e4 e7e5 b1c3 b8c6": "Vienna Game: Max Lange Defense", "e2e4 e7e5 b1c3 d7d6 f2f4": "Vienna Game: Omaha Gambit", "e2e4 e7e5 b1c3 b8c6 g2g3": "Vienna Game: Paulsen Variation", "e2e4 e7e5 b1c3 b8c6 g2g3 g8f6 f1g2 f8c5 g1e2 d7d5": "Vienna Game: Paulsen Variation", "e2e4 e7e5 b1c3 b8c6 g2g3 f8c5 f1g2 h7h5 g1f3 h5h4": "Vienna Game: Paulsen Variation, Mariotti Gambit", "e2e4 e7e5 b1c3 b8c6 d2d4 f7f5": "Vienna Game: Philidor Countergambit", "e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 g1f3 g7g5 d2d4 g5g4 f1c4 g4f3 e1g1 d7d5 e4d5 c8g4 d5c6": "Vienna Game: Pierce Gambit, Rushmere Attack", "e2e4 e7e5 b1c3 b8c6 f1c4 f8c5 d1g4 d8f6 c3d5": "Vienna Game: Stanley Variation, Meitner-Mieses Gambit", "e2e4 e7e5 b1c3 f8b4 d1g4 g8f6": "Vienna Game: Zhuravlev Countergambit", "e2e4 e7e5 f1c4 g8f6 b1c3 b7b5": "Bishop's Opening: Horwitz Gambit", "e2e4 e7e5 b1c3 g8f6 f1c4 f8c5 d2d3": "Bishop's Opening: Vienna Hybrid, Spielmann Attack", "e2e4 e7e5 b1c3 g8f6": "Vienna Game: Falkbeer Variation", "e2e4 e7e5 b1c3 g8f6 a2a3": "Vienna Game: Mengarini Variation", "e2e4 e7e5 b1c3 g8f6 g2g3": "Vienna Game: Mieses Variation", "e2e4 e7e5 b1c3 g8f6 g2g3 d7d5 e4d5 c7c6": "Vienna Game: Mieses Variation, Erben Gambit", "e2e4 e7e5 b1c3 g8f6 g2g3 f8c5 f1g2 b8c6 g1e2 d7d5 e4d5": "Vienna Game: Paulsen Variation, Pollock Gambit", "e2e4 e7e5 b1c3 g8f6 f1c4": "Vienna Game: Stanley Variation", "e2e4 e7e5 b1c3 g8f6 f1c4 f8c5 g1e2 b7b5": "Vienna Game: Stanley Variation, Eifel Gambit", "e2e4 e7e5 b1c3 g8f6 f1c4 f8b4": "Vienna Game: Stanley Variation, Reversed Spanish", "e2e4 e7e5 g1f3 g8f6 f1c4 f6e4 b1c3": "Bishop's Opening: Boden-Kieseritzky Gambit", "e2e4 e7e5 g1f3 g8f6 f1c4 f6e4 b1c3 d7d5": "Bishop's Opening: Boden-Kieseritzky Gambit, Lichtenhein Defense", "e2e4 e7e5 b1c3 g8f6 f1c4 f6e4 d1h5 e4d6 c4b3 b8c6 d2d4": "Vienna Game: Adams' Gambit", "e2e4 e7e5 b1c3 g8f6 f1c4 f6e4": "Vienna Game: Frankenstein-Dracula Variation", "e2e4 e7e5 b1c3 g8f6 f1c4 f6e4 d1h5 e4d6 c4b3 f8e7 g1f3 b8c6 f3e5": "Vienna Game: Stanley Variation, Alekhine Variation", "e2e4 e7e5 b1c3 g8f6 f1c4 f6e4 d1h5 e4d6 c4b3 b8c6 c3b5 g7g6 h5f3 f7f5 f3d5 d8e7 b5c7 e8d8 c7a8 b7b6": "Vienna Game: Stanley Variation, Frankenstein-Dracula Variation", "e2e4 e7e5 b1c3 g8f6 f1c4 f6e4 d1h5 e4d6 c4b3 f8e7": "Vienna Game: Stanley Variation, Monster Declined", "e2e4 e7e5 b1c3 b8c6 f1c4 g8f6 d2d3 f8b4 g1e2": "Bishop's Opening: Vienna Hybrid, Hrom\u00e1dka Variation", "e2e4 e7e5 b1c3 b8c6 f1c4 g8f6 f2f4 f6e4 g1f3": "Vienna Game: Stanley Variation, Bronstein Gambit", "e2e4 e7e5 b1c3 b8c6 f1c4 g8f6": "Vienna Game: Stanley Variation, Three Knights Variation", "e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 f4e5 f6e4 d1f3 f7f5 d2d4": "Vienna Game: Heyde Variation", "e2e4 e7e5 b1c3 g8f6 f2f4": "Vienna Game: Vienna Gambit", "e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 f4e5 f6e4 d1f3 f7f5": "Vienna Game: Vienna Gambit, Bardeleben Variation", "e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 f4e5 f6e4 g1f3 f8e7": "Vienna Game: Vienna Gambit, Breyer Variation", "e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 f4e5 f6e4 g1f3 c8g4 d1e2": "Vienna Game: Vienna Gambit, Kaufmann Variation", "e2e4 e7e5 b1c3 g8f6 f2f4 d7d5": "Vienna Game: Vienna Gambit, Main Line", "e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 f4e5 f6e4 d2d3": "Vienna Game: Vienna Gambit, Modern Variation", "e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 f4e5 f6e4 d1f3": "Vienna Game: Vienna Gambit, Paulsen Attack", "e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 d2d3": "Vienna Game: Vienna Gambit, Steinitz Variation", "e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 f4e5 f6e4 d2d3 d8h4 g2g3 e4g3 g1f3 h4h5 c3d5": "Vienna Game: Vienna Gambit, Wurzburger Trap", "e2e4 e7e5 f2f4": "King's Gambit", "e2e4 e7e5 f2f4 f8c5": "King's Gambit Declined: Classical Variation", "e2e4 e7e5 f2f4 f8c5 g1f3 d7d6 c2c3": "King's Gambit Declined: Classical Variation", "e2e4 e7e5 f2f4 f8c5 g1f3 d7d6 c2c3 c8g4 f4e5 d6e5 d1a4": "King's Gambit Declined: Classical Variation, Euwe Attack", "e2e4 e7e5 f2f4 f8c5 g1f3 d7d6 b2b4": "King's Gambit Declined: Classical Variation, Rotlewi Countergambit", "e2e4 e7e5 f2f4 f8c5 g1f3 d7d6 c2c3 f7f5": "King's Gambit Declined: Classical Variation, Rubinstein Countergambit", "e2e4 e7e5 f2f4 f8c5 g1f3 d7d6 b1c3 b8d7": "King's Gambit Declined: Classical, Hanham Variation", "e2e4 e7e5 f2f4 f8c5 g1f3 d7d6 c2c3 f7f5 f4e5 d6e5 d2d4 e5d4 f1c4": "King's Gambit Declined: Classical, R\u00e9ti Variation", "e2e4 e7e5 f2f4 f8c5 g1f3 d7d6 f4e5": "King's Gambit Declined: Classical, Soldatenkov Variation", "e2e4 e7e5 f1c4 b8c6 b1c3 g8f6 d2d3 f8c5 f2f4 d7d6 g1f3 c8g4 h2h3 g4f3 d1f3 e5f4": "King's Gambit Declined: Classical, Svenonius Variation", "e2e4 e7e5 f2f4 b8c6 g1f3 g7g5 f4g5 h7h6": "King's Gambit Declined: Hobbs-Zilbermints Gambit", "e2e4 e7e5 f2f4 d8h4 g2g3 h4e7": "King's Gambit Declined: Keene Defense", "e2e4 e7e5 f2f4 d8h4": "King's Gambit Declined: Keene's Defense", "e2e4 e7e5 f2f4 d8h4 g2g3": "King's Gambit Declined: Keene's Defense", "e2e4 c7c5 f2f4 e7e5": "King's Gambit Declined: Mafia Defense", "e2e4 e7e5 f2f4 b8c6 g1f3 f7f5": "King's Gambit Declined: Miles Defense", "e2e4 e7e5 f2f4 d8f6": "King's Gambit Declined: Norwalde Variation", "e2e4 e7e5 f2f4 d8f6 b1c3 f6f4 g1f3 f8b4 f1c4": "King's Gambit Declined: Norwalde Variation, B\u00fccker Gambit", "e2e4 e7e5 f2f4 d8f6 b1c3 f6f4 d2d4": "King's Gambit Declined: Norwalde Variation, Schubert Variation", "e2e4 e7e5 f2f4 f7f5": "King's Gambit Declined: Panteldakis Countergambit", "e2e4 e7e5 f2f4 f7f5 e4f5 d8h4": "King's Gambit Declined: Panteldakis Countergambit, Greco Variation", "e2e4 e7e5 f2f4 f7f5 e4f5 e5f4 d1h5 g7g6 f5g6 d8e7 e1d1": "King's Gambit Declined: Panteldakis Countergambit, Pawn Sacrifice Line", "e2e4 e7e5 f2f4 f7f5 e4f5 f8c5": "King's Gambit Declined: Panteldakis Countergambit, Schiller's Defense", "e2e4 e7e5 f2f4 f7f5 e4f5 e5f4 d1h5 e8e7": "King's Gambit Declined: Panteldakis Countergambit, Shirazi Line", "e2e4 e7e5 f2f4 f7f5 e4f5 e5f4 g1f3 d7d5 d2d4 f8d6 f1d3": "King's Gambit Declined: Panteldakis Countergambit, Symmetrical Variation", "e2e4 e7e5 f2f4 g8f6": "King's Gambit Declined: Petrov's Defense", "e2e4 e7e5 f2f4 b8c6": "King's Gambit Declined: Queen's Knight Defense", "e2e4 e7e5 f2f4 f8c5 g1f3 g7g5": "King's Gambit Declined: Senechaud Countergambit", "e2e4 e7e5 f2f4 f7f6 f4e5 b8c6": "King's Gambit Declined: Soller-Zilbermints Gambit", "e2e4 e7e5 f2f4 g7g5": "King's Gambit Declined: Zilbermints Double Countergambit", "e2e4 e7e5 f2f4 b8c6 g1f3 g7g5": "King's Gambit Declined: Zilbermints Double Gambit", "e2e4 e7e5 f2f4 d7d5": "King's Gambit Declined: Falkbeer Countergambit", "e2e4 e7e5 f2f4 d7d5 e4d5": "King's Gambit Declined: Falkbeer Countergambit Accepted", "e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 f1b5": "King's Gambit Declined: Falkbeer Countergambit, Anderssen Attack", "e2e4 e7e5 f2f4 d7d5 g1f3": "King's Gambit Declined: Falkbeer Countergambit, Blackburne Attack", "e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3": "King's Gambit Declined: Falkbeer Countergambit, Charousek Gambit", "e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 e4d5 e5e4 d2d3 f8b4 c1d2 e4e3": "King's Gambit Declined: Falkbeer Countergambit, Charousek Gambit, Morphy Defense", "e2e4 e7e5 f2f4 d7d5 d2d4": "King's Gambit Declined: Falkbeer Countergambit, Hinrichsen Gambit", "e2e4 e7e5 f2f4 d7d5 e4d5 f8c5": "King's Gambit Declined: Falkbeer Countergambit, Miles Gambit", "e2e4 e7e5 f2f4 d7d5 b1c3": "King's Gambit Declined: Falkbeer Countergambit, Milner-Barry Variation", "e2e4 e7e5 f2f4 d7d5 e4d5 e5f4": "King's Gambit Declined: Falkbeer Countergambit, Modern Transfer", "e2e4 e7e5 f2f4 d7d5 e4d5 c7c6": "King's Gambit Declined: Falkbeer Countergambit, Nimzowitsch-Marshall Countergambit", "e2e4 e7e5 f2f4 d7d5 e4d5 c7c6 d5c6 f8c5": "King's Gambit Declined: Falkbeer Countergambit, Pickler Gambit", "e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 b1c3 g8f6 d1e2": "King's Gambit Declined: Falkbeer Countergambit, Rubinstein Variation", "e2e4 e7e5 f2f4 d7d5 e4d5 e5e4": "King's Gambit Declined: Falkbeer Countergambit, Staunton Line", "e2e4 e7e5 f2f4 d7d5 b1c3 d5e4 c3e4": "Van Geet Opening: Gr\u00fcnfeld Defense, Steiner Gambit", "e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 d3e4 f6e4 g1f3 f8c5 d1e2 c5f2 e1d1 d8d5 f3d2": "King's Gambit Declined: Falkbeer Countergambit, Alapin Variation", "e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 d3e4 f6e4 d1e2": "King's Gambit Declined: Falkbeer Countergambit, Charousek Gambit", "e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 d3e4": "King's Gambit Declined: Falkbeer Countergambit, Charousek Gambit Accepted", "e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 b1d2": "King's Gambit Declined: Falkbeer Countergambit, Charousek Gambit, Keres Variation", "e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 d3e4 f6e4 g1f3 f8c5 d1e2 c8f5": "King's Gambit Declined: Falkbeer Countergambit, Charousek Gambit, Main Line", "e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 d1e2": "King's Gambit Declined: Falkbeer Countergambit, Charousek Gambit, Old Line", "e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 d3e4 f6e4 d1e2 d8d5 b1d2 f7f5 g2g4": "King's Gambit Declined: Falkbeer Countergambit, Charousek Variation", "e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 d3e4 f6e4 g1f3 f8c5 d1e2 c8f5 g2g4 e8g8": "King's Gambit Declined: Falkbeer Countergambit, Tarrasch Variation", "e2e4 e7e5 f2f4 e5f4": "King's Gambit Accepted", "e2e4 e7e5 f2f4 e5f4 d1e2": "King's Gambit Accepted: Basman Gambit", "e2e4 e7e5 f2f4 e5f4 f1c4": "King's Gambit Accepted: Bishop's Gambit", "e2e4 e7e5 f2f4 e5f4 f1c4 g7g5": "King's Gambit Accepted: Bishop's Gambit, Anderssen Defense", "e2e4 e7e5 f2f4 e5f4 f1c4 d7d5 c4d5 c7c6": "King's Gambit Accepted: Bishop's Gambit, Anderssen Variation", "e2e4 e7e5 f2f4 e5f4 f1c4 d7d5 c4d5 g8f6": "King's Gambit Accepted: Bishop's Gambit, Bledow Countergambit", "e2e4 e7e5 f2f4 e5f4 f1c4 d7d5": "King's Gambit Accepted: Bishop's Gambit, Bledow Variation", "e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 b8c6": "King's Gambit Accepted: Bishop's Gambit, Boden Variation", "e2e4 e7e5 f2f4 e5f4 f1c4 g8f6 b1c3 c7c6": "King's Gambit Accepted: Bishop's Gambit, Bogoljubow Defense", "e2e4 e7e5 f2f4 e5f4 f1c4 g8f6 b1c3": "King's Gambit Accepted: Bishop's Gambit, Bogoljubow Variation", "e2e4 e7e5 f2f4 e5f4 f1c4 d7d5 c4d5 d8h4 e1f1 f8d6": "King's Gambit Accepted: Bishop's Gambit, Boren-Svenonius Variation", "e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 b7b5": "King's Gambit Accepted: Bishop's Gambit, Bryan Countergambit", "e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 d7d5 c4d5 g7g5 g2g3": "King's Gambit Accepted: Bishop's Gambit, Chigorin's Attack", "e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 g8e7 b1c3 g7g5 d2d4 f8g7": "King's Gambit Accepted: Bishop's Gambit, Classical Defense", "e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 g7g5 d1f3": "King's Gambit Accepted: Bishop's Gambit, Classical Defense, Cozio Attack", "e2e4 e7e5 f2f4 e5f4 f1c4 g8f6": "King's Gambit Accepted: Bishop's Gambit, Cozio Defense", "e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 d7d6": "King's Gambit Accepted: Bishop's Gambit, Cozio Variation", "e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 g8f6": "King's Gambit Accepted: Bishop's Gambit, First Jaenisch Variation", "e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 g7g5 b1c3 f8g7 g2g3 f4g3 d1f3": "King's Gambit Accepted: Bishop's Gambit, Fraser Variation", "e2e4 e7e5 f2f4 e5f4 f1c4 f7f5": "King's Gambit Accepted: Bishop's Gambit, Gianutio Gambit", "e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 f8c5": "King's Gambit Accepted: Bishop's Gambit, Greco Variation", "e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 g7g5 b1c3 f8g7 d2d4 d7d6 e4e5": "King's Gambit Accepted: Bishop's Gambit, Grimm Attack", "e2e4 e7e5 f2f4 e5f4 f1c4 b7b5": "King's Gambit Accepted: Bishop's Gambit, Kieseritzky Gambit", "e2e4 e7e5 f2f4 e5f4 f1c4 c7c6": "King's Gambit Accepted: Bishop's Gambit, Lopez Defense", "e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 g7g5": "King's Gambit Accepted: Bishop's Gambit, Lopez Variation", "e2e4 e7e5 f2f4 e5f4 f1c4 b8c6": "King's Gambit Accepted: Bishop's Gambit, Maurian Defense", "e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 g7g5 b1c3 f8g7 d2d4 g8e7 g2g3": "King's Gambit Accepted: Bishop's Gambit, McDonnell Attack", "e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 g7g5 b1c3 f8g7 g2g3": "King's Gambit Accepted: Bishop's Gambit, McDonnell Attack", "e2e4 e7e5 f2f4 e5f4 f1c4 g8f6 b1c3 f8b4 e4e5": "King's Gambit Accepted: Bishop's Gambit, Paulsen Attack", "e2e4 e7e5 f2f4 e5f4 f1c4 g8e7": "King's Gambit Accepted: Bishop's Gambit, Steinitz Defense", "e2e4 e7e5 f2f4 e5f4 d1f3": "King's Gambit Accepted: Breyer Gambit", "e2e4 e7e5 f2f4 e5f4 d1h5": "King's Gambit Accepted: Carrera Gambit", "e2e4 e7e5 f2f4 e5f4 d1g4": "King's Gambit Accepted: Dodo Variation", "e2e4 e7e5 f2f4 e5f4 g1h3": "King's Gambit Accepted: Eisenberg Variation", "e2e4 e7e5 f2f4 e5f4 g2g3": "King's Gambit Accepted: Gaga Gambit", "e2e4 e7e5 f2f4 e5f4 f1c4 f7f5 d1e2 d8h4 e1d1 f5e4 b1c3 e8d8": "King's Gambit Accepted: Lopez-Gianutio Countergambit, Hein Variation", "e2e4 e7e5 f2f4 e5f4 b1c3": "King's Gambit Accepted: Mason-Keres Gambit", "e2e4 e7e5 f2f4 e5f4 b2b3": "King's Gambit Accepted: Orsini Gambit", "e2e4 e7e5 f2f4 e5f4 g1e2": "King's Gambit Accepted: Paris Gambit", "e2e4 e7e5 f2f4 e5f4 d2d4": "King's Gambit Accepted: Polerio Gambit", "e2e4 e7e5 f2f4 e5f4 f1b5": "King's Gambit Accepted: Schurig Gambit, with Bb5", "e2e4 e7e5 f2f4 e5f4 f1d3": "King's Gambit Accepted: Schurig Gambit, with Bd3", "e2e4 e7e5 f2f4 e5f4 h2h4": "King's Gambit Accepted: Stamma Gambit", "e2e4 e7e5 f2f4 e5f4 f1e2": "King's Gambit Accepted: Tartakower Gambit", "e2e4 e7e5 f2f4 e5f4 f1e2 f7f5 e4f5 d7d6": "King's Gambit Accepted: Tartakower Gambit, Weiss Defense", "e2e4 e7e5 f2f4 e5f4 e1f2": "King's Gambit Accepted: Tumbleweed", "e2e4 e7e5 f2f4 e5f4 g1f3 h7h6": "King's Gambit Accepted: Becker Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 g8e7": "King's Gambit Accepted: Bonsch-Osmolovsky Variation", "e2e4 e7e5 f2f4 e5f4 g1f3 d7d6": "King's Gambit Accepted: Fischer Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 d7d6 b2b4": "King's Gambit Accepted: Fischer Defense, Schulder Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 d7d6 d2d4 g8f6 f1d3": "King's Gambit Accepted: Fischer Defense, Spanish Variation", "e2e4 e7e5 f2f4 e5f4 g1f3 f7f5": "King's Gambit Accepted: Gianutio Countergambit", "e2e4 e7e5 f2f4 e5f4 g1f3 d7d6 f1c4 h7h6 d2d4 g7g5 h2h4 f8g7": "King's Gambit Accepted: Greco Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5": "King's Gambit Accepted: King's Knight's Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3": "King's Gambit Accepted: King's Knight's Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 b8c6": "King's Gambit Accepted: MacLeod Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 g8f6": "King's Gambit Accepted: Schallopp Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 g8f6 e4e5 f6h5 g2g4": "King's Gambit Accepted: Schallopp Defense, Tashkent Attack", "e2e4 e7e5 f2f4 e5f4 g1f3 h7h5": "King's Gambit Accepted: Wagenbach Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 f8e7": "King's Gambit Accepted: Cunningham Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 f8e7 f1c4 e7h4 g2g3": "King's Gambit Accepted: Cunningham Defense, Bertin Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 f8e7 f1c4 e7h4 g2g3 f4g3 e1g1 g3h2 g1h1": "King's Gambit Accepted: Cunningham Defense, Bertin Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 f8e7 f1c4 g8f6": "King's Gambit Accepted: Cunningham Defense, McCormick Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 d7d5 e4d5 g8f6": "King's Gambit Accepted: Abbazia Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 d7d5 e4d5 g8f6 f1b5 c7c6 d5c6 b7c6 b5c4 f6d5": "King's Gambit Accepted: Abbazia Defense, Main Line", "e2e4 e7e5 f2f4 e5f4 g1f3 d7d5": "King's Gambit Accepted: Modern Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 d7d5 e4d5": "King's Gambit Accepted: Modern Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 h2h4": "King's Gambit Accepted: Australian Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 b8c6 f1c4 g7g5": "King's Gambit Accepted: Blachly Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 g4f3 d1f3 d8f6 e4e5 f6e5 c4f7": "King's Gambit Accepted: Double Muzio Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 g4f3 d1f3 d8f6 b1c3 f6d4 g1h1 d4c4 c3d5": "King's Gambit Accepted: Double Muzio Gambit, Baldwin Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 g4f3 d1f3 d8f6 b1c3": "King's Gambit Accepted: Double Muzio Gambit, Bello Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 g4f3 d1f3 d8f6 e4e5 f6e5 d2d3 f8h6 b1c3 g8e7 c1d2 b8c6 a1e1": "King's Gambit Accepted: Double Muzio Gambit, Paulsen Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 g4f3 d1f3 d8f6 c4f7 e8f7 d2d4 f6d4 c1e3 d4f6 b1c3 f4e3": "King's Gambit Accepted: Double Muzio Gambit, Young Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 d2d4": "King's Gambit Accepted: Ghulam-Kassim Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 d2d4 g4f3 d1f3": "King's Gambit Accepted: Ghulam-Kassim Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4": "King's Gambit Accepted: King's Knight's Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 d2d4 g4f3 c1f4": "King's Gambit Accepted: Kotov Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 c4f7": "King's Gambit Accepted: Lolli Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 c4f7 e8f7 e1g1 g4f3 d1f3 d8f6 d2d4 f6d4 c1e3 d4f6 b1c3": "King's Gambit Accepted: Lolli Gambit, Young Variation", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 b1c3": "King's Gambit Accepted: McDonnell Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 d7d6 e1g1 c8g4 h2h3 h7h5 h3g4 h5g4": "King's Gambit Accepted: Middleton Countergambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 g4f3 d1f3 d8e7": "King's Gambit Accepted: Muzio Gambit Accepted, From's Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 d7d5": "King's Gambit Accepted: Muzio Gambit, Brentano Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 g4f3 d1f3 b8c6": "King's Gambit Accepted: Muzio Gambit, Holloway Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 d8e7": "King's Gambit Accepted: Muzio Gambit, Kling and Horwitz Counterattack", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 g4f3 d1f3 d8f6": "King's Gambit Accepted: Muzio Gambit, Sarratt Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1": "King's Gambit Accepted: Muzio Gambit, Wild Muzio Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 b1c3": "King's Gambit Accepted: Quaade Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 d2d4": "King's Gambit Accepted: Rosentreter Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 d2d4 g5g4 f3e5 d8h4 g2g3": "King's Gambit Accepted: Rosentreter Gambit, Bird Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 d2d4 g5g4 b1c3": "King's Gambit Accepted: Rosentreter Gambit, S\u00f6rensen Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 d2d4 g5g4 c1f4": "King's Gambit Accepted: Rosentreter Gambit, Testa Variation", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 f3e5": "King's Gambit Accepted: Salvio Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 f3e5 d8h4 e1f1 g8h6 d2d4 d7d6": "King's Gambit Accepted: Salvio Gambit, Anderssen Counterattack", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 f3e5 d8h4 e1f1 f4f3": "King's Gambit Accepted: Salvio Gambit, Cochrane Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 f3e5 d8h4 e1f1 g8f6": "King's Gambit Accepted: Salvio Gambit, Santa Maria Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 f3e5 d8h4 e1f1 g8h6": "King's Gambit Accepted: Salvio Gambit, Silberschmidt Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 f3e5 d8h4 e1f1 b8c6": "King's Gambit Accepted: Salvio Gambit, Viennese Variation", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 f3e5 d8h4 e1f1 g8h6 d2d4 f4f3": "King's Gambit Accepted: Silberschmidt Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 d2d4 g5g4 f3e5": "King's Gambit Accepted: S\u00f6rensen Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 f8g7 h2h4 h7h6 d2d4 d7d6 b1c3 c7c6 h4g5 h6g5 h1h8 g7h8 f3e5": "King's Gambit Accepted: Greco Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 f8g7 e1g1": "King's Gambit Accepted: Hanstein Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 f8g7 d2d4 d7d6 c2c3": "King's Gambit Accepted: Mayet Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 f8g7 h2h4": "King's Gambit Accepted: Philidor Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 h7h6 f1c4 d7d6 d2d4 g7g5 h2h4 f8g7 d1d3": "King's Gambit Accepted: Philidor Gambit, Schultz Variation", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 f8g7": "King's Gambit Accepted: Traditional Variation", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5": "King's Gambit Accepted: Allgaier Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 h7h6 g5f7 e8f7 d2d4": "King's Gambit Accepted: Allgaier Gambit, Thorold Attack", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 h7h6 g5f7 e8f7 f1c4": "King's Gambit Accepted: Allgaier Gambit, Urusov Attack", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 h7h6 g5f7 e8f7 b1c3": "King's Gambit Accepted: Allgaier, Blackburne Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 h7h6 g5f7 e8f7 d2d4 d7d5 c1f4 d5e4 f1c4 f7g7 f4e5": "King's Gambit Accepted: Allgaier, Cook Variation", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 h7h6 g5f7 e8f7 d1g4 g8f6 g4f4 f8d6": "King's Gambit Accepted: Allgaier, Horny Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 g8f6": "King's Gambit Accepted: Allgaier, Schlechter Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 h7h6 g5f7 e8f7 f1c4 d7d5 c4d5 f7g7 d2d4": "King's Gambit Accepted: Allgaier, Urusov Attack", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5": "King's Gambit Accepted: Kieseritzky Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 g8f6 f1c4 d7d5 e4d5 f8d6": "King's Gambit Accepted: Kieseritzky Gambit, Anderssen Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 g8f6 f1c4 d7d5 e4d5 f8d6 d2d4 f6h5 c1f4 h5f4": "King's Gambit Accepted: Kieseritzky Gambit, Anderssen-Cordel Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 g8f6": "King's Gambit Accepted: Kieseritzky Gambit, Berlin Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 g8f6 d2d4": "King's Gambit Accepted: Kieseritzky Gambit, Berlin Defense, Rubinstein Variation", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 g8f6 e5g4 d7d5": "King's Gambit Accepted: Kieseritzky Gambit, Berlin Defense, de Riviere Variation", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 d7d5": "King's Gambit Accepted: Kieseritzky Gambit, Brentano Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 d7d5 d2d4 g8f6 c1f4": "King's Gambit Accepted: Kieseritzky Gambit, Brentano Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 d7d5 d2d4 g8f6 c1f4 f6e4 b1d2": "King's Gambit Accepted: Kieseritzky Gambit, Brentano Defense, Caro Variation", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 h7h6 g5f7": "King's Gambit Accepted: Kieseritzky Gambit, Cotter Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 d7d6": "King's Gambit Accepted: Kieseritzky Gambit, Kolisch Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 h7h5": "King's Gambit Accepted: Kieseritzky Gambit, Long Whip", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 b8c6": "King's Gambit Accepted: Kieseritzky Gambit, Neumann Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 f8g7": "King's Gambit Accepted: Kieseritzky Gambit, Paulsen Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 g8f6 f1c4 d7d5 e4d5 f8g7": "King's Gambit Accepted: Kieseritzky Gambit, Paulsen Defense Deferred", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 g8f6 f1c4 d7d5 e4d5 f8d6 e1g1 d6e5": "King's Gambit Accepted: Kieseritzky Gambit, Rice Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 d8e7": "King's Gambit Accepted: Kieseritzky Gambit, Rosenthal Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 h7h5 f1c4 h8h7 d2d4 f8h6 b1c3": "King's Gambit Accepted: Kieseritzky, Long Whip Defense, Jaenisch Variation", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 f8e7": "King's Gambit Accepted: Kieseritzky, Polerio Defense", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 g8f6 f1c4 d7d5 e4d5 f8d6 e1g1": "King's Gambit Accepted: Kieseritzky, Rice Gambit", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 d8e7 d2d4 f7f5 f1c4": "King's Gambit Accepted: Kieseritzky, Salvio Defense, Cozio Variation", "e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4": "King's Gambit Accepted: King's Knight's Gambit", "e2e4 e7e5 g1f3 d7d5": "Elephant Gambit", "e2e4 e7e5 g1f3 d7d5 e4d5 f8d6": "Elephant Gambit: Mar\u00f3czy Gambit", "e2e4 e7e5 g1f3 d7d5 e4d5 e5e4": "Elephant Gambit: Paulsen Countergambit", "e2e4 e7e5 g1f3 d7d5 f3e5 d5e4 f1c4 d8g5": "Elephant Gambit: Wasp Variation", "e2e4 e7e5 g1f3 d8e7": "Gunderam Defense", "e2e4 e7e5 g1f3": "King's Knight Opening", "e2e4 e7e5 g1f3 f8c5": "King's Pawn Game: Busch-Gass Gambit", "e2e4 e7e5 g1f3 f8c5 f3e5 b8c6": "King's Pawn Game: Busch-Gass Gambit, Chiodini Gambit", "e2e4 e7e5 g1f3 f7f6": "King's Pawn Game: Damiano Defense", "e2e4 e7e5 g1f3 f7f6 f3e5 f6e5 d1h5 g7g6 h5e5 d8e7 e5h8": "King's Pawn Game: Damiano Defense, Damiano Gambit", "e2e4 e7e5 g1f3 f7f6 f3e5 d8e7 e5f3 d7d5": "King's Pawn Game: Damiano Defense, Damiano Gambit, Chigorin Gambit", "e2e4 e7e5 g1f3 d8e7 f1c4 f7f5": "King's Pawn Game: Gunderam Defense, Gunderam Gambit", "e2e4 e7e5 g1f3 c7c6": "King's Pawn Game: Gunderam Gambit", "e2e4 e7e5 g1f3 d8f6 f1c4 f6g6 e1g1": "King's Pawn Game: La Bourdonnais Gambit", "e2e4 e7e5 g1f3 d8f6": "King's Pawn Game: McConnell Defense", "e2e4 e7e5 g1f3 f7f5": "Latvian Gambit", "e2e4 e7e5 g1f3 f7f5 e4f5": "Latvian Gambit Accepted", "e2e4 e7e5 g1f3 f7f5 f3e5 d8f6 d2d4 d7d6 e5c4": "Latvian Gambit Accepted: Bilguer Variation", "e2e4 e7e5 g1f3 f7f5 f3e5 d8f6 d2d4 d7d6 e5c4 f5e4 f1e2": "Latvian Gambit Accepted: Bronstein Attack", "e2e4 e7e5 g1f3 f7f5 f3e5 d8f6 d2d4 d7d6 e5c4 f5e4 d1h5 g7g6 h5e2": "Latvian Gambit Accepted: Bronstein Gambit", "e2e4 e7e5 g1f3 f7f5 f3e5 d8f6 e5c4 f5e4 d2d3": "Latvian Gambit Accepted: Foltys Variation", "e2e4 e7e5 g1f3 f7f5 f3e5 d8f6 e5c4": "Latvian Gambit Accepted: Foltys-Leonhardt Variation", "e2e4 e7e5 g1f3 f7f5 f3e5 d8f6 e5c4 f5e4 b1c3": "Latvian Gambit Accepted: Leonhardt Variation", "e2e4 e7e5 g1f3 f7f5 f3e5 d8f6 d2d4": "Latvian Gambit Accepted: Main Line", "e2e4 e7e5 g1f3 f7f5 f3e5 d8f6 d2d4 d7d6 e5c4 f5e4 c4e3": "Latvian Gambit Accepted: Nimzowitsch Attack", "e2e4 e7e5 g1f3 f7f5 f1c4 f5e4 f3e5 d8g5 e5f7 g5g2 h1f1 d7d5 f7h8 g8f6": "Latvian Gambit: Behting Variation", "e2e4 e7e5 g1f3 f7f5 f1c4 f5e4 f3e5 g8f6": "Latvian Gambit: Corkscrew Countergambit", "e2e4 e7e5 g1f3 f7f5 f3e5 g8f6 f1c4 f5e4 e5f7 d8e7 f7h8 d7d5": "Latvian Gambit: Corkscrew Gambit", "e2e4 e7e5 g1f3 f7f5 c2c4": "Latvian Gambit: Diepstraten Countergambit", "e2e4 e7e5 g1f3 f7f5 f3e5 b8c6": "Latvian Gambit: Fraser Defense", "e2e4 e7e5 g1f3 f7f5 f3e5 d8e7": "Latvian Gambit: Greco Variation", "e2e4 e7e5 g1f3 f7f5 g2g4": "Latvian Gambit: Lobster Gambit", "e2e4 e7e5 g1f3 f7f5 d2d4": "Latvian Gambit: Mason Countergambit", "e2e4 e7e5 g1f3 f7f5 f1c4": "Latvian Gambit: Mayet Attack", "e2e4 e7e5 g1f3 f7f5 f1c4 g8f6": "Latvian Gambit: Mayet Attack, Morgado Defense", "e2e4 e7e5 g1f3 f7f5 f1c4 f5e4 f3e5 d8g5 d2d4 g5g2": "Latvian Gambit: Mayet Attack, Poisoned Pawn Variation", "e2e4 e7e5 g1f3 f7f5 f1c4 f5e4 f3e5 d7d5": "Latvian Gambit: Mayet Attack, Polerio-Svedenborg Variation", "e2e4 e7e5 g1f3 f7f5 f1c4 b7b5": "Latvian Gambit: Mayet Attack, Strautins Gambit", "e2e4 e7e5 g1f3 f7f5 b1c3": "Latvian Gambit: Mlotkowski Variation", "e2e4 e7e5 g1f3 f7f5 b2b4": "Latvian Gambit: Senechaud Gambit", "e2e4 e7e5 g1f3 d7d6": "Philidor Defense", "e2e4 e7e5 g1f3 d7d6 d2d4": "Philidor Defense", "e2e4 e7e5 g1f3 d7d6 f1c4": "Philidor Defense", "e2e4 e7e5 g1f3 d7d6 f1c4 f8e7": "Philidor Defense", "e2e4 e7e5 g1f3 d7d6 d2d4 c8g4 d4e5 b8d7": "Philidor Defense: Albin-Blackburne Gambit", "e2e4 e7e5 g1f3 d7d6 d2d4 e5d4 f3d4 g8f6 b1c3 f8e7 f1e2 e8g8 e1g1 c7c5 d4f3 b8c6 c1g5 c8e6 f1e1": "Philidor Defense: Berger Variation", "e2e4 e7e5 g1f3 d7d6 d2d4 e5d4 c2c3": "Philidor Defense: Bird Gambit", "e2e4 e7e5 g1f3 d7d6 d2d4 e5d4 d1d4 c8d7": "Philidor Defense: Boden Variation", "e2e4 e7e5 g1f3 d7d6 d2d4 e5d4": "Philidor Defense: Exchange Variation", "e2e4 e7e5 g1f3 d7d6 d2d4 e5d4 f3d4": "Philidor Defense: Exchange Variation", "e2e4 e7e5 g1f3 d7d6 d2d4 e5d4 f3d4 g8f6": "Philidor Defense: Exchange Variation", "e2e4 e7e5 g1f3 d7d6 d2d4 b8d7": "Philidor Defense: Hanham Variation", "e2e4 e7e5 g1f3 d7d6 d2d4 b8d7 f1c4 c7c6 c2c3": "Philidor Defense: Hanham Variation, Delmar Variation", "e2e4 e7e5 g1f3 d7d6 d2d4 b8d7 f1c4 c7c6 e1g1": "Philidor Defense: Hanham Variation, Krause Variation", "e2e4 e7e5 g1f3 d7d6 d2d4 b8d7 f1c4 c7c6 b1c3": "Philidor Defense: Hanham Variation, Schlechter Variation", "e2e4 e7e5 g1f3 d7d6 d2d4 b8d7 f1c4 d7b6": "Philidor Defense: Hanham Variation, Sharp Variation", "e2e4 e7e5 g1f3 d7d6 d2d4 b8d7 f1c4 c7c6 e1g1 f8e7 d4e5": "Philidor Defense: Hanham Variation, Steiner Variation", "e2e4 e7e5 g1f3 d7d6 d2d4 b8d7 f1c4 c7c6 f3g5": "Philidor Defense: Hanham, Kmoch Variation", "e2e4 e7e5 g1f3 d7d6 d2d4 e5d4 f3d4 g7g6": "Philidor Defense: Larsen Variation", "e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 b1c3 b8d7": "Philidor Defense: Lion Variation", "e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 b1c3 b8d7 f1c4 f8e7 c4f7": "Philidor Defense: Lion Variation, Bishop Sacrifice", "e2e4 d7d6 d2d4 g8f6 b1c3 b8d7 g1f3 e7e5 f1c4 f8e7 d4e5 d6e5 c4f7": "Philidor Defense: Lion Variation, Delayed Bishop Sacrifice", "e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 b1c3 b8d7 f1c4 f8e7 f3g5 e8g8 c4f7 f8f7 g5e6": "Philidor Defense: Lion Variation, Forcing Line", "e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 b1c3 b8d7 f1c4 f8e7 e1g1 h7h6": "Philidor Defense: Lion Variation, Lion's Claw, with Bc4 and h6", "e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 b1c3 b8d7 f1e2 f8e7 e1g1 c7c6": "Philidor Defense: Lion Variation, Lion's Claw, with Be2 and c6", "e2e4 e7e5 g1f3 d7d6 d2d4 b8d7 b1c3 g8f6 g2g4": "Philidor Defense: Lion Variation, Shirov Gambit", "e2e4 d7d6 d2d4 g8f6 b1c3 e7e5 g1f3 b8d7 f1c4 f8e7 e1g1 e8g8 d1e2 c7c6 a2a4 e5d4": "Philidor Defense: Lion Variation, Sozin Variation", "e2e4 e7e5 g1f3 d7d6 f1c4 f7f5": "Philidor Defense: Lopez Countergambit", "e2e4 e7e5 g1f3 d7d6 d2d4 f7f5 f1c4 e5d4 f3g5 g8h6 g5h7": "Philidor Defense: Lopez Countergambit, Jaenisch Variation", "e2e4 e7e5 g1f3 d7d6 d2d4 e5d4 f1c4": "Philidor Defense: Morphy Gambit", "e2e4 e7e5 g1f3 d7d6 d2d4 g8f6": "Philidor Defense: Nimzowitsch Variation", "e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 d4e5": "Philidor Defense: Nimzowitsch Variation", "e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 f1c4": "Philidor Defense: Nimzowitsch Variation, Klein Variation", "e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 d4e5 f6e4 d1d5": "Philidor Defense: Nimzowitsch Variation, Rellstab Variation", "e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 d4e5 f6e4 b1d2": "Philidor Defense: Nimzowitsch Variation, Sokolsky Variation", "e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 b1c3 b8d7 f1c4 f8e7 f3g5 e8g8 c4f7": "Philidor Defense: Nimzowitsch, Larobok Variation", "e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 f3g5": "Philidor Defense: Nimzowitsch, Locock Variation", "e2e4 e7e5 g1f3 d7d6 d2d4 e5d4 f3d4 d6d5 e4d5": "Philidor Defense: Paulsen Attack", "e2e4 e7e5 g1f3 d7d6 d2d4 f7f5": "Philidor Defense: Philidor Countergambit", "e2e4 e7e5 g1f3 d7d6 d2d4 f7f5 d4e5 f5e4 f3g5 d6d5 e5e6 f8c5 b1c3": "Philidor Defense: Philidor Countergambit, Berger Variation", "e2e4 e7e5 g1f3 d7d6 d2d4 f7f5 b1c3": "Philidor Defense: Philidor Countergambit, Zukertort Variation", "e2e4 e7e5 g1f3 d7d6 d2d4 f7f5 d4e5 f5e4 f3g5 d6d5 e5e6": "Philidor Defense: Philidor Countergambit, del Rio Attack", "e2e4 e7e5 g1f3 d7d6 d2d4 c8d7": "Philidor Defense: Philidor Gambit", "e2e4 e7e5 g1f3 d7d6 f1c4 f8e7 c2c3": "Philidor Defense: Steinitz Variation", "e2e4 e7e5 g1f3 g8f6": "Russian Game", "e2e4 e7e5 g1f3 g8f6 f3e5": "Russian Game", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6": "Russian Game", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3": "Russian Game", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4": "Russian Game", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4": "Russian Game: Classical Attack", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8e7 e1g1 b8c6 f1e1 c8g4 c2c3 f7f5 b1d2": "Russian Game: Classical Attack, Berger Variation", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8e7 e1g1 b8c6 f1e1": "Russian Game: Classical Attack, Chigorin Variation", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 b8c6 e1g1 f8e7 c2c4 c6b4 c4d5": "Russian Game: Classical Attack, Chigorin Variation, Browne Attack", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 b8c6 e1g1 f8e7 c2c4 c6b4 d3e2": "Russian Game: Classical Attack, Chigorin Variation, Main Line", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 e4f6": "Russian Game: Classical Attack, Closed Variation", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 b8c6 e1g1 f8e7 c2c4": "Russian Game: Classical Attack, Jaenisch Variation", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 b8c6 e1g1 f8e7 f1e1 c8g4 c2c3 f7f5 c3c4": "Russian Game: Classical Attack, Krause Variation", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8d6 e1g1 e8g8 c2c4 c8g4 c4d5 f7f5 f1e1 d6h2": "Russian Game: Classical Attack, Marshall Trap", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8d6": "Russian Game: Classical Attack, Marshall Variation", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8d6 e1g1 e8g8 c2c4 c7c6 f1e1 c8g4": "Russian Game: Classical Attack, Marshall Variation, Chinese Gambit", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8e7 e1g1 b8c6 f1e1 c8g4 c2c3 f7f5 c3c4 e7h4": "Russian Game: Classical Attack, Mar\u00f3czy Variation", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8e7 e1g1 e8g8": "Russian Game: Classical Attack, Mason Variation", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 b8c6": "Russian Game: Classical Attack, Mason-Showalter Variation", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8d6 e1g1 e8g8 c2c4 c7c6": "Russian Game: Classical Attack, Staunton Variation", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8d6 e1g1 e8g8 c2c4 c8g4": "Russian Game: Classical Attack, Tarrasch Variation", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f7": "Russian Game: Cochrane Gambit", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f7 e8f7 f1c4": "Russian Game: Cochrane Gambit, Bishop Check Line", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f7 e8f7 d2d4": "Russian Game: Cochrane Gambit, Center Variation", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d1e2": "Russian Game: Cozio Attack", "e2e4 e7e5 g1f3 g8f6 f3e5 f6e4": "Russian Game: Damiano Variation", "e2e4 e7e5 g1f3 g8f6 f3e5 f6e4 d1e2 d8e7": "Russian Game: Damiano Variation, Kholmov Gambit", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d3": "Russian Game: French Attack", "e2e4 e7e5 g1f3 g8f6 f1c4": "Russian Game: Italian Variation", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5d3": "Russian Game: Karklins-Martinovsky Variation", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 c2c4": "Russian Game: Kaufmann Attack", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 f1d3": "Russian Game: Millennium Attack", "e2e4 e7e5 g1f3 g8f6 d1e2 b8c6 d2d4": "Russian Game: Moody Gambit", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 b1c3": "Russian Game: Nimzowitsch Attack", "e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5c4": "Russian Game: Paulsen Attack", "e2e4 e7e5 g1f3 g8f6 f3e5 b8c6": "Russian Game: Stafford Gambit", "e2e4 e7e5 g1f3 g8f6 f3e5 b8c6 e5c6 d7c6": "Russian Game: Stafford Gambit", "e2e4 e7e5 g1f3 g8f6 b1c3": "Russian Game: Three Knights Game", "e2e4 e7e5 f1c4 g8f6 d2d4 e5d4 g1f3": "Bishop's Opening: Urusov Gambit", "e2e4 e7e5 f1c4 g8f6 d2d4 e5d4 g1f3 f6e4 d1d4": "Bishop's Opening: Urusov Gambit, Keidansky Gambit", "e2e4 e7e5 g1f3 g8f6 d2d4": "Russian Game: Modern Attack", "e2e4 e7e5 g1f3 g8f6 d2d4 e5d4": "Russian Game: Modern Attack", "e2e4 e7e5 g1f3 g8f6 d2d4 e5d4 e4e5 f6e4 d1e2 e4c5 f3d4 b8c6": "Russian Game: Modern Attack, Bardeleben Variation", "e2e4 e7e5 g1f3 g8f6 d2d4 e5d4 e4e5 f6e4 d1d4": "Russian Game: Modern Attack, Center Attack", "e2e4 e7e5 g1f3 g8f6 d2d4 f6e4 f1d3": "Russian Game: Modern Attack, Center Variation", "e2e4 e7e5 g1f3 g8f6 d2d4 f6e4 f1d3 b8c6": "Russian Game: Modern Attack, Murrey Variation", "e2e4 e7e5 g1f3 g8f6 d2d4 e5d4 e4e5 f6e4 d1e2": "Russian Game: Modern Attack, Steinitz Variation", "e2e4 e7e5 g1f3 g8f6 d2d4 d7d5": "Russian Game: Modern Attack, Symmetrical Variation", "e2e4 e7e5 g1f3 g8f6 d2d4 e5d4 e4e5 f6e4 f1b5": "Russian Game: Modern Attack, Tal Gambit", "e2e4 e7e5 g1f3 g8f6 d2d4 f6e4 f1d3 d7d5 f3e5 f8d6 e1g1 e8g8 c2c4 d6e5": "Russian Game: Modern Attack, Trifunovic Variation", "e2e4 e7e5 g1f3 b8c6 c2c4 g8f6 f3e5": "Dresden Opening: The Goblin", "e2e4 e7e5 g1f3 b8c6 f3e5": "Irish Gambit", "e2e4 e7e5 g1f3 b8c6 g2g3": "King's Knight Opening: Konstantinopolsky", "e2e4 e7e5 g1f3 b8c6": "King's Knight Opening: Normal Variation", "e2e4 e7e5 g1f3 b8c6 c2c4": "King's Pawn Game: Dresden Opening", "e2e4 e7e5 g1f3 b8c6 b2b4": "King's Pawn Game: Pachman Wing Gambit", "e2e4 e7e5 g1f3 b8c6 f3e5 c6e5 d2d4": "King's Pawn Game: Schulze-M\u00fcller Gambit", "e2e4 e7e5 g1f3 b8c6 f1e2": "King's Pawn Game: Tayler Opening", "e2e4 e7e5 g1f3 b8c6 f1e2 g8f6 d2d4": "King's Pawn Game: Tayler Opening", "e2e4 e7e5 g1f3 b8c6 f1e2 g8f6 d2d4 e5d4 e4e5": "King's Pawn Game: Tayler Opening, Basman Gambit", "e2e4 e7e5 g1f3 b8c6 f1e2 g8f6 d2d3 d7d5 b1d2": "King's Pawn Game: Tayler Opening, Inverted Hanham", "e2e4 e7e5 g1f3 b8c6 d2d3 f7f5 e4f5": "Latvian Gambit: Clam Gambit", "e2e4 e7e5 g1f3 b8c6 c2c3": "Ponziani Opening", "e2e4 e7e5 g1f3 b8c6 c2c3 d7d5 d1a4 c8d7": "Ponziani Opening: Caro Gambit", "e2e4 e7e5 g1f3 b8c6 c2c3 g8f6": "Ponziani Opening: Jaenisch Counterattack", "e2e4 e7e5 g1f3 b8c6 c2c3 d7d5 d1a4 g8f6": "Ponziani Opening: Leonhardt Variation", "e2e4 e7e5 g1f3 b8c6 c2c3 g8f6 f1c4": "Ponziani Opening: Neumann Gambit", "e2e4 e7e5 g1f3 b8c6 c2c3 f7f5": "Ponziani Opening: Ponziani Countergambit", "e2e4 e7e5 g1f3 b8c6 c2c3 f7f5 d2d4 d7d6 d4d5": "Ponziani Opening: Ponziani Countergambit, Schmidt Attack", "e2e4 e7e5 g1f3 b8c6 c2c3 f8e7": "Ponziani Opening: Romanishin Variation", "e2e4 e7e5 g1f3 b8c6 c2c3 g8e7": "Ponziani Opening: R\u00e9ti Variation", "e2e4 e7e5 g1f3 b8c6 c2c3 d7d5 f1b5": "Ponziani Opening: Spanish Variation", "e2e4 e7e5 g1f3 b8c6 c2c3 d7d5 f1b5 d5e4 f3e5 d8d5 d1a4": "Ponziani Opening: Spanish Variation, Harrwitz Attack, Nikitin Gambit", "e2e4 e7e5 g1f3 b8c6 c2c3 d7d5 d1a4 f7f6": "Ponziani Opening: Steinitz Variation", "e2e4 e7e5 g1f3 b8c6 c2c3 g8f6 d2d4 f6e4 d4d5 f8c5": "Ponziani Opening: Vukovic Gambit", "e2e4 e7e5 g1f3 b8c6 d2d4": "Scotch Game", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4": "Scotch Game", "e2e4 e7e5 g1f3 b8c6 f1c4 f8e7 d2d4 e5d4": "Scotch Game: Benima Defense", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8b4 c2c3 d4c3 b2c3 b4a5 e4e5": "Scotch Game: Cochrane Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8c5 f3g5 g8h6 g5f7 h6f7 c4f7 e8f7 d1h5 g7g6 h5c5 d7d5": "Scotch Game: Cochrane-Shumov Defense", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 c2c3": "Scotch Game: G\u00f6ring Gambit", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 c2c3 d4c3 f1c4 g8f6 b1c3 f8b4": "Scotch Game: G\u00f6ring Gambit, Bardeleben Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 c2c3 d4c3 f1c4": "Scotch Game: G\u00f6ring Gambit, Double Pawn Sacrifice", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 c2c3 d4c3 b1c3 f8b4": "Scotch Game: G\u00f6ring Gambit, Main Line", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8b4 c2c3 d4c3 e1g1 c3b2 c1b2 g8f6 f3g5 e8g8 e4e5 c6e5": "Scotch Game: Hanneken Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8c5": "Scotch Game: Haxo Gambit", "e2e4 e7e5 g1f3 b8c6 d2d4 c6d4": "Scotch Game: Lolli Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 c6d4 f3d4 e5d4 d1d4": "Scotch Game: Lolli Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 c6d4 f3d4 e5d4 f1c4": "Scotch Game: Napoleon Gambit", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1b5": "Scotch Game: Relfsson Gambit", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4": "Scotch Game: Scotch Gambit", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 g8f6 e4e5": "Scotch Game: Scotch Gambit, Advance Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8c5 e1g1 d7d6 c2c3 c8g4": "Scotch Game: Scotch Gambit, Cochrane-Anderssen Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4": "Scotch Game: Scotch Gambit, Dubois R\u00e9ti Defense", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 c2c3 d7d5": "Scotch Game: Scotch Gambit, G\u00f6ring Gambit Declined", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e4e5 f6g4": "Scotch Game: Scotch Gambit, Kingside Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8b4": "Scotch Game: Scotch Gambit, London Defense", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8c5 f3g5": "Scotch Game: Scotch Gambit, Sarratt Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 c2c3 d4c3 b1c3 d7d6 f1c4 c8g4 e1g1 c6e5 f3e5 g4d1 c4f7 e8e7 c3d5": "Scotch Game: Sea-Cadet Mate", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8c5 f3g5 g8h6 d1h5": "Scotch Game: Vitzthum Attack", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4": "Scotch Game", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 d8h4 d4b5 f8b4 c1d2": "Scotch Game", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 g8f6 e4e5": "Scotch Game: Alekhine Gambit", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 c1e3 d8f6 d4b5": "Scotch Game: Blumenfeld Attack", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 d8h4 c1e3": "Scotch Game: Braune Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5": "Scotch Game: Classical Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 c1e3 d8f6 c2c3 g8e7 d1d2": "Scotch Game: Classical Variation, Blackburne Attack", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 d4c6 d8f6": "Scotch Game: Classical Variation, Intermezzo Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 c1e3 d8f6 c2c3 f6g6": "Scotch Game: Classical Variation, Millennium Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 d8h4 d4f3": "Scotch Game: Fraser Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 c6d4 d1d4 d7d6 f1d3": "Scotch Game: Ghulam-Kassim Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 c1e3 d8f6 c2c3 g8e7 d1d2 d7d5 d4b5 c5e3 d2e3 e8g8 b5c7 a8b8 c7d5 e7d5 e4d5 c6b4": "Scotch Game: Gottschall Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 d8h4 d4b5": "Scotch Game: Horwitz Attack", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 d8h4 d4b5 f8b4 c1d2 h4e4 f1e2 e8d8 e1g1 b4d2 d1d2": "Scotch Game: Horwitz Attack, Blackburne Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8b4": "Scotch Game: Malaniuk Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 c1e3 d8f6 c2c3 g8e7 d4c2": "Scotch Game: Meitner Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 g8f6 d4c6 b7c6 e4e5": "Scotch Game: Mieses Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 d8h4 b1c3 f8b4": "Scotch Game: Modern Defense", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 c1e3 d8f6 c2c3 g8e7 f1b5": "Scotch Game: Paulsen Attack", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 d8h4 d4f5": "Scotch Game: Paulsen Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 c1e3 d8f6 c2c3 g8e7 f1b5 c6d8": "Scotch Game: Paulsen, Gunsberg Defense", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 d4b3": "Scotch Game: Potter Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 d4b3 c5b4": "Scotch Game: Romanishin Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 d8h4 d4b5 f8b4 c1d2 h4e4 f1e2 e8d8 e1g1 b4d2 b1d2 e4g6": "Scotch Game: Rosenthal Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 g8f6": "Scotch Game: Schmidt Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 d8h4": "Scotch Game: Steinitz Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 d8h4 b1c3": "Scotch Game: Steinitz Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 g8f6 d4c6 b7c6 b1d2": "Scotch Game: Tartakower Variation", "e2e4 e7e5 g1f3 b8c6 b1c3": "Three Knights Opening", "e2e4 e7e5 g1f3 b8c6 b1c3 f8b4": "Three Knights Opening", "e2e4 e7e5 g1f3 b8c6 b1c3 f8b4 c3d5 g8f6": "Three Knights Opening: Schlechter Variation", "e2e4 e7e5 g1f3 b8c6 b1c3 g7g6": "Three Knights Opening: Steinitz Defense", "e2e4 e7e5 g1f3 b8c6 b1c3 g7g6 d2d4 e5d4 c3d5": "Three Knights Opening: Steinitz-Rosenthal Variation", "e2e4 e7e5 g1f3 b8c6 b1c3 f7f5": "Three Knights Opening: Winawer Defense", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6": "Four Knights Game", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 a2a3": "Four Knights Game: Gunsberg Variation", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f3e5": "Four Knights Game: Halloween Gambit", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f3e5 c6e5 d2d4 e5g6 e4e5 f6g8 f1c4 f8b4 d1f3 f7f5": "Four Knights Game: Halloween Gambit, Oldtimer Variation", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f3e5 c6e5 d2d4 e5c6 d4d5 c6e5 f2f4 e5g6 e4e5 f6g8 d5d6 c7d6 e5d6 d8f6 c3b5 a8b8": "Four Knights Game: Halloween Gambit, Plasma Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 b1c3": "Four Knights Game: Italian Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 b1c3 f6e4 c4f7": "Four Knights Game: Italian Variation, Noa Gambit", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 d2d4": "Four Knights Game: Scotch Variation", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 d2d4 e5d4": "Four Knights Game: Scotch Variation Accepted", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 d2d4 e5d4 c3d5": "Four Knights Game: Scotch Variation, Belgrade Gambit", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 d2d4 e5d4 c3d5 f6e4 d1e2 f7f5": "Four Knights Game: Scotch Variation, Belgrade Gambit, Modern Defense", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 d2d4 f8b4 f3e5": "Four Knights Game: Scotch Variation, Krause Gambit", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 d2d4 f8b4 f3e5 d8e7": "Four Knights Game: Scotch Variation, Krause Gambit, Leonhardt Defense", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 d2d4 f8b4 d4d5 c6d4": "Four Knights Game: Scotch Variation, Oxford Gambit", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 d2d4 e5d4 f3d4 f6e4": "Four Knights Game: Scotch Variation, Schmid Defense", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5": "Four Knights Game: Spanish Variation", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8c5 e1g1 e8g8 f3e5 c6e5 d2d4 c5d6 f2f4 e5c6 e4e5 d6b4": "Four Knights Game: Spanish Variation, Bardeleben Variation", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8c5": "Four Knights Game: Spanish Variation, Classical Variation", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 a7a6 b5c6": "Four Knights Game: Spanish Variation, Ranken Variation", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 c6d4": "Four Knights Game: Spanish Variation, Rubinstein Variation", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 c6d4 b5e2": "Four Knights Game: Spanish Variation, Rubinstein Variation", "e2e4 e7e5 g1f3 g8f6 b1c3 b8c6 f1b5 c6d4 f3e5 d8e7 f2f4": "Four Knights Game: Spanish Variation, Rubinstein Variation", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 c6d4 f3d4": "Four Knights Game: Spanish Variation, Rubinstein Variation Accepted", "e2e4 e7e5 g1f3 g8f6 b1c3 b8c6 f1b5 c6d4 e1g1": "Four Knights Game: Spanish Variation, Rubinstein Variation, Henneberger Variation", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 c6d4 b5a4 f8c5 f3e5 e8g8": "Four Knights Game: Spanish Variation, Rubinstein Variation, Marshall Gambit", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 c6d4 f3e5 f8c5 e1g1 e8g8": "Four Knights Game: Spanish Variation, Rubinstein Variation, Marshall Variation", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 c6d4 b5e2 d4f3 e2f3 f8c5 e1g1 e8g8 d2d3 d7d6 c3a4 c5b6": "Four Knights Game: Spanish Variation, Rubinstein Variation, Mar\u00f3czy Variation", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 a7a6 b5c6 d7c6 f3e5 f6e4 c3e4 d8d4 e1g1 d4e5 f1e1 c8e6 d2d4 e5d5": "Four Knights Game: Spanish Variation, Spielmann Variation", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 b4c3": "Four Knights Game: Spanish Variation", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 d8e7 c3e2 d7d5": "Four Knights Game: Spanish Variation, Alatortsev Variation", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4": "Four Knights Game: Spanish Variation, Double Spanish", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3": "Four Knights Game: Spanish Variation, Double Spanish", "e2e4 e7e5 g1f3 g8f6 b1c3 b8c6 f1b5 f8b4 e1g1 e8g8 c3d5 f6d5 e4d5 e5e4": "Four Knights Game: Spanish Variation, Gunsberg Counterattack", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 b4c3 b2c3 d7d6 f1e1": "Four Knights Game: Spanish Variation, Janowski Variation", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 b5c6": "Four Knights Game: Spanish Variation, Nimzowitsch Variation", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 b4c3 b2c3 d7d5": "Four Knights Game: Spanish Variation, Svenonius Variation", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 d7d6": "Four Knights Game: Spanish Variation, Symmetrical Variation", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 d7d6 c1g5 b4c3 b2c3 d8e7 f1e1 c6d8 d3d4 c8g4": "Four Knights Game: Spanish Variation, Symmetrical Variation", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 d7d6 c1g5 c6e7": "Four Knights Game: Spanish Variation, Symmetrical Variation", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 d7d6 c3e2": "Four Knights Game: Spanish Variation, Symmetrical Variation", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 d7d6 c1g5 c6e7 f3h4 c7c6 b5c4 d6d5 c4b3 d8d6": "Four Knights Game: Spanish Variation, Symmetrical Variation, Blake Variation", "e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 d7d6 c1g5 b4c3 b2c3 d8e7": "Four Knights Game: Spanish Variation, Symmetrical Variation, Metger Unpin", "e2e4 e7e5 g1f3 g8f6 b1c3 b8c6 f1b5 f8b4 e1g1 e8g8 d2d3 d7d6 c1g5 c8e6": "Four Knights Game: Spanish Variation, Symmetrical Variation, Tarrasch Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b1c3 g8f6": "Four Knights Game: Italian Variation", "e2e4 e7e5 g1f3 b8c6 f1c4": "Italian Game", "e2e4 e7e5 g1f3 b8c6 f1c4 h7h6": "Italian Game: Anti-Fried Liver Defense", "e2e4 e7e5 g1f3 b8c6 f1c4 c6d4": "Italian Game: Blackburne-Kosti\u0107 Gambit", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 e1g1 g8f6 c2c3": "Italian Game: Classical Variation, Albin Gambit", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 e1g1 g8f6 d2d4": "Italian Game: Deutz Gambit", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 d2d3": "Italian Game: Giuoco Pianissimo", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 e1g1 f8c5 b1c3 d7d6 d2d3": "Italian Game: Giuoco Pianissimo", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 d2d3 g8f6 b1c3 d7d6 c1g5": "Italian Game: Giuoco Pianissimo, Canal Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 d2d3 f7f5 f3g5 f5f4": "Italian Game: Giuoco Pianissimo, Dubois Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 d2d3 g8f6 b1c3": "Italian Game: Giuoco Pianissimo, Italian Four Knights Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 d2d3 f7f5": "Italian Game: Giuoco Pianissimo, Lucchini Gambit", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d3 f8c5": "Italian Game: Giuoco Pianissimo, Normal", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5": "Italian Game: Giuoco Piano", "e2e4 e7e5 g1f3 b8c6 f1c4 f8e7": "Italian Game: Hungarian Defense", "e2e4 e7e5 g1f3 b8c6 f1c4 f8e7 d2d4 e5d4 c2c3 g8f6 e4e5 f6e4": "Italian Game: Hungarian Defense, Tartakower Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c4f7": "Italian Game: Jerome Gambit", "e2e4 e7e5 g1f3 b8c6 f1c4 d7d6": "Italian Game: Paris Defense", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 d2d4": "Italian Game: Rosentreter Gambit", "e2e4 e7e5 g1f3 b8c6 f1c4 f7f5": "Italian Game: Rousseau Gambit", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4": "Italian Game: Evans Gambit", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 b1c3 c8g4": "Italian Game: Evans Gambit", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4": "Italian Game: Evans Gambit Accepted", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b6": "Italian Game: Evans Gambit Declined", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b6 a2a4": "Italian Game: Evans Gambit Declined", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b6 c1b2": "Italian Game: Evans Gambit Declined, Cordel Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b6 b4b5 c6a5 f3e5 d8g5 d1f3 g5e5 f3f7 e8d8 c1b2": "Italian Game: Evans Gambit Declined, Hicken Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b6 b4b5 c6a5 f3e5 d8g5": "Italian Game: Evans Gambit Declined, Hirschbach Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b6 b4b5 c6a5 f3e5 g8h6": "Italian Game: Evans Gambit Declined, Lange Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b6 b4b5 c6a5 f3e5 g8h6 d2d4 d7d6 c1h6 d6e5 h6g7 h8g8 c4f7 e8f7 g7e5 d8g5 b1d2": "Italian Game: Evans Gambit Declined, Pavlov Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b6 a2a4 a7a6 b1c3": "Italian Game: Evans Gambit Declined, Showalter Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b6 b4b5 c6a5 f3e5 d8g5 c4f7 e8e7 d1h5": "Italian Game: Evans Gambit Declined, Vasquez Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4e7": "Italian Game: Evans Gambit, Anderssen Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4e7 d2d4 c6a5": "Italian Game: Evans Gambit, Anderssen Variation, Cordel Line", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 b7b5": "Italian Game: Evans Gambit, Fontaine Countergambit", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 b1c3 c8g4 d1a4": "Italian Game: Evans Gambit, Fraser Attack", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 b1c3 c8g4 d1a4 g4d7 a4b3 c6a5 c4f7 e8f8 b3c2": "Italian Game: Evans Gambit, Fraser-Mortimer Attack", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 b1c3 c6a5 c1g5": "Italian Game: Evans Gambit, G\u00f6ring Attack", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 c3d4 c5b4 c1d2": "Italian Game: Evans Gambit, Harding Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 d7d5": "Italian Game: Evans Gambit, Hein Countergambit", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4f8": "Italian Game: Evans Gambit, Mayet Defense", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5": "Italian Game: Evans Gambit, McDonnell Defense", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6": "Italian Game: Evans Gambit, McDonnell Defense, Main Line", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 e5d4 e1g1 d7d6 c3d4 a5b6 b1c3": "Italian Game: Evans Gambit, Morphy Attack", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 b1c3 c8g4 d1a4 g4d7 a4b3 c6a5 c4f7 e8f8 b3c2 f8f7": "Italian Game: Evans Gambit, Mortimer-Evans Gambit", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 d4d5 c6a5 c1b2 g8e7": "Italian Game: Evans Gambit, Paulsen Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 b1c3 c6a5 c1g5 f7f6 g5e3": "Italian Game: Evans Gambit, Steinitz Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4d6": "Italian Game: Evans Gambit, Stone-Ware Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 d4d5 c6a5 c1b2": "Italian Game: Evans Gambit, Ulvestad Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 e1g1 d7d6": "Italian Game: Evans Gambit", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 e1g1 d7d6 d2d4 c8g4": "Italian Game: Evans Gambit, Alapin-Steinitz Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 e1g1 g8f6 d2d4 e5d4": "Italian Game: Evans Gambit, Anderssen Defense", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 d7d6": "Italian Game: Evans Gambit, Bronstein Defense", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 e5d4 e1g1 d4c3": "Italian Game: Evans Gambit, Compromised Defense", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 e5d4 e1g1 d4c3 d1b3 d8f6 e4e5 f6g6 b1c3 g8e7 c1a3": "Italian Game: Evans Gambit, Compromised Defense, Main Line", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 e5d4 e1g1 d4c3 d1b3 d8f6 e4e5 f6g6 b1c3 g8e7 f1d1": "Italian Game: Evans Gambit, Compromised Defense, Potter Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 e5d4 e1g1 d4d3": "Italian Game: Evans Gambit, Dufresne Defense", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 e5d4 e1g1 b7b5": "Italian Game: Evans Gambit, Johner Defense", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 g8f6": "Italian Game: Evans Gambit, Laroche Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 e1g1 d7d6 d2d4 a5b6": "Italian Game: Evans Gambit, Lasker Defense", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 b7b5": "Italian Game: Evans Gambit, Leonhardt Countergambit", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 d7d6 d1b3 d8d7 d4e5 d6e5 e1g1 a5b6 c1a3 c6a5 f3e5": "Italian Game: Evans Gambit, Levenfish Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5": "Italian Game: Evans Gambit, Main Line", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 e5d4 e1g1 g8e7": "Italian Game: Evans Gambit, Mieses Defense", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 e5d4": "Italian Game: Evans Gambit, Pierce Defense", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 e1g1 g8f6 d2d4 e8g8 f3e5": "Italian Game: Evans Gambit, Richardson Attack", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 e1g1 d7d6 d2d4 c8d7": "Italian Game: Evans Gambit, Sanders-Alapin Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 e1g1": "Italian Game: Evans Gambit, Slow Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 d7d6 c1g5": "Italian Game: Evans Gambit, Sokolsky Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 d7d6 d1b3": "Italian Game: Evans Gambit, Tartakower Attack", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 e5d4 e1g1 d7d6 d1b3": "Italian Game: Evans Gambit, Waller Attack", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 b2b4": "Italian Game: Bird's Attack", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3": "Italian Game: Classical Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 d8e7 d2d4 c5b6": "Italian Game: Classical Variation, Center Holding Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 d8e7": "Italian Game: Classical Variation, Closed Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 d8e7 d2d4 c5b6 d4d5 c6b8 d5d6": "Italian Game: Classical Variation, Eisinger Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 d7d6 d2d4 e5d4 c3d4 c5b6": "Italian Game: Classical Variation, La Bourdonnais Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 d8e7 d2d4 c5b6 c1g5": "Italian Game: Classical Variation, Mestel Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 d8e7 d2d4 c5b6 e1g1 d7d6 a2a4 a7a6 h2h3 g8f6 f1e1": "Italian Game: Classical Variation, Tarrasch Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6": "Italian Game: Classical Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4": "Italian Game: Classical Variation, Center Attack", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 e4e5 f6e4 c4d5 e4f2 e1f2 d4c3 f2g3": "Italian Game: Classical Variation, Ghulam-Kassim Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d3": "Italian Game: Classical Variation, Giuoco Pianissimo", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d3 d7d6 b1d2 e8g8 e1g1": "Italian Game: Classical Variation, Giuoco Pianissimo", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d3 d7d6 e1g1 e8g8": "Italian Game: Classical Variation, Giuoco Pianissimo", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 e1g1 g8f6 d2d3 h7h6 c2c3": "Italian Game: Classical Variation, Giuoco Pianissimo", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 e1g1 g8f6 d2d3 d7d6 c2c3 a7a6": "Italian Game: Classical Variation, Giuoco Pianissimo", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d3 d7d6 b2b4": "Italian Game: Classical Variation, Giuoco Pianissimo, Albin Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d3 d7d6 e1g1 e8g8 f1e1 a7a6 c4b3 c5a7 h2h3": "Italian Game: Classical Variation, Giuoco Pianissimo, Main Line", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d3 a7a6": "Italian Game: Classical Variation, Giuoco Pianissimo, with a6", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d3 d7d6 b1d2 a7a6": "Italian Game: Classical Variation, Giuoco Pianissimo, with a6", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d3 d7d6": "Italian Game: Classical Variation, Giuoco Pianissimo, with d6", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 e1g1 g8f6 d2d3 h7h6": "Italian Game: Classical Variation, Giuoco Pianissimo, with h6", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 e1g1 g8f6 d2d3 h7h6 c2c3 d7d6": "Italian Game: Classical Variation, Giuoco Pianissimo, with h6", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8c5 c2c3 g8f6 e4e5 d7d5": "Italian Game: Classical Variation, Greco Gambit", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 e4e5 d7d5 c4b5 f6e4 c3d4 c5b4": "Italian Game: Classical Variation, Greco Gambit, Anderssen Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 f6e4 e1g1 e4c3": "Italian Game: Classical Variation, Greco Gambit, Greco Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 f6e4 e1g1 b4c3": "Italian Game: Classical Variation, Greco Gambit, Main Line", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 f6e4 e1g1 b4c3 d4d5 c3f6 f1e1 c6e7 e1e4 d7d6 g2g4": "Italian Game: Classical Variation, Greco Gambit, Moeller-Bayonet Attack", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 f6e4 e1g1 b4c3 d4d5": "Italian Game: Classical Variation, Greco Gambit, Moeller-Therkatz Attack", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4": "Italian Game: Classical Variation, Greco Gambit, Traditional Line", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 f6e4 e1g1 e4c3 b2c3 b4c3 c1a3": "Italian Game: Giuoco Piano, Aitken Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 f6e4 e1g1 e4c3 b2c3 b4c3 d1b3 d7d5": "Italian Game: Giuoco Piano, Bernstein Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 e1f1": "Italian Game: Giuoco Piano, Cracow Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3": "Italian Game: Giuoco Piano, Greco's Attack", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 e1g1 f8c5 d2d4 c5d4 f3d4 c6d4 c1g5 d7d6 f2f4 d8e7 f4e5 d6e5 b1c3": "Italian Game: Giuoco Piano, Holzhausen Attack", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 c1d2 f6e4 d2b4 c6b4 c4f7 e8f7 d1b3 d7d5 f3e5 f7f6 f2f3": "Italian Game: Giuoco Piano, Krause Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 e1g1 f8c5 d2d4 c5d4 f3d4 c6d4 c1g5 h7h6 g5h4 g7g5 f2f4": "Italian Game: Giuoco Piano, Rosentreter Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 f6e4 e1g1 b4c3 b2c3 d7d5 c1a3": "Italian Game: Giuoco Piano, Steinitz Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 f6e4 e1g1 b4c3 d4d5 c3f6 f1e1 c6e7 e1e4 d7d6 c1g5 f6g5 f3g5 e8g8 g5h7": "Italian Game: Giuoco Piano, Therkatz-Herzog Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6": "Italian Game: Two Knights Defense", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 e1g1 f8c5 d2d4 c5d4 f3d4 c6d4 c1g5 d7d6": "Italian Game: Two Knights Defense", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d3": "Italian Game: Two Knights Defense, Modern Bishop's Opening", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d3 f8e7": "Italian Game: Two Knights Defense, Modern Bishop's Opening", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1": "Italian Game: Scotch Gambit", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f6e4 f1e1 d7d5 c4d5 d8d5 b1c3": "Italian Game: Scotch Gambit, Anderssen Attack", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f6e4 f1e1 d7d5 c4d5 d8d5 b1c3 d5a5 c3e4 c8e6 c1d2 a5d5 d2g5": "Italian Game: Scotch Gambit, Anderssen Attack, Main Line", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 g8f6 e1g1 f6e4 f1e1 d7d5 b1c3": "Italian Game: Scotch Gambit, Canal Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f6e4": "Italian Game: Scotch Gambit, Double Gambit Accepted", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 g8f6 e1g1 d7d6": "Italian Game: Scotch Gambit, Janowski Defense", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 g8f6 e1g1 f8c5": "Italian Game: Scotch Gambit, Max Lange Attack", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e4e5 d7d5 c4b5 f6e4": "Italian Game: Scotch Gambit, Max Lange Attack", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 e1g1 g8f6 d2d4 e5d4 e4e5 d7d5 e5f6 d5c4 f1e1 c8e6 f6g7": "Italian Game: Scotch Gambit, Max Lange Attack Accepted", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 g8f6 e1g1 f8c5 e4e5 d7d5 e5f6 d5c4 f1e1 c8e6 f3g5 d8d5 b1c3 d5f5 c3e4": "Italian Game: Scotch Gambit, Max Lange Attack, Long Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 g8f6 e1g1 f8c5 e4e5 f6g4": "Italian Game: Scotch Gambit, Max Lange Attack, Spielmann Defense", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f6e4 b1c3": "Italian Game: Scotch Gambit, Nakhmanson Gambit", "e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 e1g1": "Italian Game: Scotch Gambit, Walbrodt-Baird Gambit", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 g8f6 e1g1 f8e7": "Italian Game: Scotch Gambit, de Riviere Defense", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 d7d6": "Italian Game: Scotch Invitation Declined", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e4e5 d7d5 c4b5 f6e4 f3d4 f8c5 d4c6 c5f2 e1f1 d8h4": "Italian Game: Two Knights Defense, Keidansky Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 g8f6 e1g1 f8c5 e4e5": "Italian Game: Two Knights Defense, Max Lange Attack", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f8c5 e4e5 d7d5 e5f6 d5c4 f1e1 c8e6 f3g5 d8d5 b1c3 d5f5 g2g4 f5g6 c3e4 c5b6 f2f4 e8c8": "Italian Game: Two Knights Defense, Max Lange Attack, Berger Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f8c5 e4e5 f6g4 c2c3": "Italian Game: Two Knights Defense, Max Lange Attack, Krause Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8c5 e1g1 g8f6 e4e5 d7d5 e5f6 d5c4 f1e1 c8e6 f3g5 g7g6": "Italian Game: Two Knights Defense, Max Lange Attack, Loman Defense", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f8c5 e4e5 d7d5 e5f6 d5c4 f1e1 c8e6 f3g5 d8d5 b1c3 d5f5 c3e4 c5f8": "Italian Game: Two Knights Defense, Max Lange Attack, Rubinstein Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4": "Italian Game: Two Knights Defense, Open Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 f3g5": "Italian Game: Two Knights Defense, Perreux Variation", "e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 g8f6 e1g1 f6e4 f1e1 d7d5 c4d5 d8d5 b1c3 d5a5 c3e4 c8e6 c1g5 h7h6 g5h4 g7g5 e4f6 e8e7 b2b4": "Italian Game: Two Knights Defense, Yurdansky Attack", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 f6d5 g5f7 e8f7 d1f3 f7e6 b1c3 c6b4 f3e4 c7c6 a2a3 b4a6 d2d4 a6c7": "Italian Game: Two Knights Defense, Fegatello Attack, Leonhardt Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 f6d5 g5f7": "Italian Game: Two Knights Defense, Fried Liver Attack", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6d4": "Italian Game: Two Knights Defense, Fritz Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6d4 c2c3 b7b5 c4f1 f6d5 g5e4": "Italian Game: Two Knights Defense, Fritz, Gruber Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6b4": "Italian Game: Two Knights Defense, Kloss Gambit", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5": "Italian Game: Two Knights Defense, Knight Attack", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5": "Italian Game: Two Knights Defense, Knight Attack, Normal Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 f6d5 d2d4": "Italian Game: Two Knights Defense, Lolli Attack", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 f6d5 d2d4 f8b4": "Italian Game: Two Knights Defense, Pincus Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 f6e4": "Italian Game: Two Knights Defense, Ponziani-Steinitz Gambit", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 f8c5": "Italian Game: Two Knights Defense, Traxler Counterattack", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 f8c5 c4f7": "Italian Game: Two Knights Defense, Traxler Counterattack, Bishop Sacrifice Line", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 f8c5 g5f7 c5f2 e1f2 f6e4 f2e3": "Italian Game: Two Knights Defense, Traxler Counterattack, King March Line", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 f8c5 g5f7": "Italian Game: Two Knights Defense, Traxler Counterattack, Knight Sacrifice Line", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 f8c5 c4f7 e8e7 d2d4": "Italian Game: Two Knights Defense, Traxler Variation, Trencianske-Teplice Gambit", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 b7b5": "Italian Game: Two Knights Defense, Ulvestad Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 b7b5 c4f1 h7h6 g5f7": "Italian Game: Two Knights Defense, Ulvestad Variation, Kurkin Gambit", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 b5e2": "Italian Game: Two Knights Defense", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 d1f3 c6b5": "Italian Game: Two Knights Defense, Blackburne Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 d1f3 a8b8": "Italian Game: Two Knights Defense, Colman Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 d2d3 h7h6 g5f3 e5e4 d1e2 a5c4 d3c4 f8e7": "Italian Game: Two Knights Defense, Mar\u00f3czy Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 d1f3 d8c7 b5d3": "Italian Game: Two Knights Defense, Paoli Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5": "Italian Game: Two Knights Defense, Polerio Defense", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5": "Italian Game: Two Knights Defense, Polerio Defense, Bishop Check Line", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 d1f3": "Italian Game: Two Knights Defense, Polerio Defense, Bogoljubow Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 d2d3": "Italian Game: Two Knights Defense, Polerio Defense, Kieseritzky Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 d2d3 h7h6 g5f3 e5e4 d1e2 a5c4 d3c4 f8c5 f3d2": "Italian Game: Two Knights Defense, Polerio Defense, Yankovich Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 b5e2 h7h6 g5f3 e5e4 f3e5 f8d6 d2d4 d8c7 c1d2": "Italian Game: Two Knights Defense, Knorre Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 b5e2 h7h6 g5f3 e5e4 f3e5 d8c7": "Italian Game: Two Knights Defense, Polerio Defense, G\u00f6ring Variation", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 b5e2 h7h6": "Italian Game: Two Knights Defense, Polerio Defense, Suhle Defense", "e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 b5e2 h7h6 g5h3": "Italian Game: Two Knights Defense, Steinitz Variation", "e2e4 e7e5 g1f3 b8c6 f1b5": "Ruy Lopez", "e2e4 e7e5 g1f3 b8c6 f1b5 f8b4": "Ruy Lopez: Alapin Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 f8b4 c2c3 b4a5 b5c6 d7c6": "Ruy Lopez: Alapin Defense, Alapin Gambit", "e2e4 e7e5 g1f3 b8c6 f1b5 g7g5": "Ruy Lopez: Brentano Gambit", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a5": "Ruy Lopez: Bulgarian Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 g8e7": "Ruy Lopez: Cozio Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 g8e7 b1c3 g7g6": "Ruy Lopez: Cozio Defense, Paulsen Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 g7g6 d2d4 e5d4 f3d4 f8g7 c1e3 g8e7 b1c3 e8g8 d1d2 d7d5": "Ruy Lopez: Cozio Defense, Tartakower Gambit", "e2e4 e7e5 g1f3 b8c6 f1b5 g7g6": "Ruy Lopez: Fianchetto Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 g7g6 c2c3 f7f5": "Ruy Lopez: Fianchetto Defense, Kevitz Gambit", "e2e4 e7e5 g1f3 b8c6 f1b5 f8e7": "Ruy Lopez: Lucena Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 f7f6": "Ruy Lopez: N\u00fcrnberg Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 c6a5": "Ruy Lopez: Pollock Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 c6b8": "Ruy Lopez: Retreat Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 b7b6": "Ruy Lopez: Rotary-Albany Gambit", "e2e4 e7e5 g1f3 b8c6 f1b5 d7d5": "Ruy Lopez: Spanish Countergambit", "e2e4 e7e5 g1f3 b8c6 f1b5 d7d5 f3e5 d8g5 e1g1": "Ruy Lopez: Spanish Countergambit, Harding Countergambit, Fricke Gambit", "e2e4 e7e5 g1f3 b8c6 f1b5 d7d5 f3e5 d8g5 e5c6": "Ruy Lopez: Spanish Countergambit, Harding Gambit", "e2e4 e7e5 g1f3 b8c6 f1b5 d8e7": "Ruy Lopez: Vinogradov Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 c6d4": "Ruy Lopez: Bird Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 c6d4 f3d4 e5d4 e1g1 g8e7": "Ruy Lopez: Bird Variation, Paulsen Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 d7d6 d2d4 c8d7 c2c4": "Ruy Lopez: Old Steinitz Defense, Semi-Duras Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 d7d6": "Ruy Lopez: Steinitz Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 d7d6 d2d4 e5d4 e1g1": "Ruy Lopez: Steinitz Defense, Center Gambit", "e2e4 e7e5 g1f3 b8c6 f1b5 d7d6 d2d4 c8d7 b1c3 g8f6 b5c6": "Ruy Lopez: Steinitz Defense, Nimzowitsch Attack", "e2e4 e7e5 g1f3 b8c6 f1b5 f7f5": "Ruy Lopez: Schliemann Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 f7f5 b1c3 f5e4 c3e4 d7d5 f3e5 d5e4 e5c6 d8g5": "Ruy Lopez: Schliemann Defense, Classical Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 f7f5 b1c3": "Ruy Lopez: Schliemann Defense, Dyckhoff Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 f7f5 b5c6": "Ruy Lopez: Schliemann Defense, Exchange Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 f7f5 e4f5": "Ruy Lopez: Schliemann Defense, Jaenisch Gambit Accepted", "e2e4 e7e5 g1f3 b8c6 f1b5 f7f5 b1c3 f5e4 c3e4 f8e7": "Ruy Lopez: Schliemann Defense, Kosti\u0107 Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 f7f5 b1c3 f5e4 c3e4 d7d5 f3e5 d5e4 e5c6 d8d5": "Ruy Lopez: Schliemann Defense, M\u00f6hring Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 f7f5 d2d4": "Ruy Lopez: Schliemann Defense, Sch\u00f6nemann Attack", "e2e4 e7e5 g1f3 b8c6 f1b5 f7f5 b1c3 f5e4 c3e4 g8f6": "Ruy Lopez: Schliemann Defense, Tartakower Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f8c5 c2c3 e8g8 d2d4 c5b6": "Ruy Lopez: Classical Defense, Benelux Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 f8c5 c2c3 d8e7": "Ruy Lopez: Classical Defense, Boden Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 f8c5 e1g1 c6d4 b2b4": "Ruy Lopez: Classical Defense, Zaitsev Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 f8c5": "Ruy Lopez: Classical Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 f8c5 c2c3": "Ruy Lopez: Classical Variation, Central Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 f8c5 c2c3 c5b6": "Ruy Lopez: Classical Variation, Charousek Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 f8c5 c2c3 f7f5": "Ruy Lopez: Classical Variation, Cordel Gambit", "e2e4 e7e5 g1f3 b8c6 f1b5 f8c5 c2c3 d7d5": "Ruy Lopez: Classical Variation, Konikowski Gambit", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f8c5 c2c3 e8g8 d2d4 c5b6 c1g5": "Ruy Lopez: Classical Variation, Modern Main Line", "e2e4 e7e5 g1f3 b8c6 f1b5 f8c5 b2b4": "Ruy Lopez: Classical Variation, Spanish Wing Gambit", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6": "Ruy Lopez: Berlin Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1": "Ruy Lopez: Berlin Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 d2d3 d7d6 b5c6": "Ruy Lopez: Berlin Defense, Anderssen Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f8c5": "Ruy Lopez: Berlin Defense, Beverwijk Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 d2d3 d7d6 c2c4": "Ruy Lopez: Berlin Defense, Duras Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6g4": "Ruy Lopez: Berlin Defense, Fishing Pole Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 d2d3 f8c5 c1e3": "Ruy Lopez: Berlin Defense, Kaufmann Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 d2d3 c6e7 f3e5 c7c6": "Ruy Lopez: Berlin Defense, Mortimer Trap", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 d2d3 c6e7": "Ruy Lopez: Berlin Defense, Mortimer Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 d2d4 e5d4 e1g1": "Ruy Lopez: Berlin Defense, Nyholm Attack", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f8c5 c2c3": "Ruy Lopez: Classical Variation, Zukertort Gambit", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 f3e5": "Ruy Lopez: Halloween Attack", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 d7d6 d2d4 c8d7 b1c3 f8e7 c1g5": "Ruy Lopez: Berlin Defense, Closed Bernstein Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 d7d6 d2d4 c8d7 b1c3 f8e7 b5c6": "Ruy Lopez: Berlin Defense, Closed Showalter Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 d7d6 d2d4 c8d7 b1c3 e5d4": "Ruy Lopez: Berlin Defense, Closed Wolf Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 d7d6 d2d4 c8d7 b1c3 f8e7": "Ruy Lopez: Berlin Defense, Hedgehog Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 d7d6": "Ruy Lopez: Berlin Defense, Improved Steinitz Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 d7d6 d2d4 c8d7 b1c3 g8f6 e1g1 f8e7 f1e1 e8g8": "Ruy Lopez: Berlin Defense, Tarrasch Trap", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 d7d6 d2d4 f6d7": "Ruy Lopez: Closed Berlin Defense, Chigorin Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 e4d6 b5c6 d7c6 d4e5 d6f5 d1d8 e8d8 b1c3 c8d7": "Ruy Lopez: Berlin Defense, Berlin Wall", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 f8e7 d1e2 e4d6 b5c6 b7c6 d4e5 d6f5": "Ruy Lopez: Berlin Defense, Cordel Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 f8e7 d4e5": "Ruy Lopez: Berlin Defense, Minckwitz Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 f8e7 d1e2 e4d6 b5c6 b7c6 d4e5 d6b7 b2b3": "Ruy Lopez: Berlin Defense, Pillsbury Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4": "Ruy Lopez: Berlin Defense, Rio Gambit Accepted", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 f8e7": "Ruy Lopez: Berlin Defense, Rio de Janeiro Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 f8e7 d1e2 e4d6 b5c6 b7c6 d4e5 d6b7 b1c3 e8g8 f1e1 b7c5 f3d4 c5e6 c1e3 e6d4 e3d4 c6c5": "Ruy Lopez: Berlin Defense, Rio de Janeiro Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 a7a6": "Ruy Lopez: Berlin Defense, Rosenthal Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 f8e7 d1e2 d7d5": "Ruy Lopez: Berlin Defense, Trifunovic Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 f8e7 d1e2 e4d6 b5c6 b7c6 d4e5 d6b7 f3d4": "Ruy Lopez: Berlin Defense, Winawer Attack", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 f8e7 d1e2 e4d6 b5c6 b7c6 d4e5 d6b7 c2c4": "Ruy Lopez: Berlin Defense, Zukertort Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 e4d6": "Ruy Lopez: Berlin Defense, l'Hermet Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 e4d6 b5c6 d7c6 d4e5 d6f5 d1d8 e8d8": "Ruy Lopez: Berlin Defense, l'Hermet Variation, Berlin Wall Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 e4d6 b5c6 d7c6 d4e5 d6e4": "Ruy Lopez: Berlin Defense, l'Hermet Variation, Westerinen Line", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 e4d6 b5a4": "Ruy Lopez: Open Berlin Defense, Showalter Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 e4d6 d4e5": "Ruy Lopez: Open Berlin Defense, l'Hermet Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6": "Ruy Lopez: Exchange Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 d7c6 d2d4 e5d4 d1d4 d8d4 f3d4 f8d6": "Ruy Lopez: Exchange Variation, Alekhine Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 d7c6 b1c3": "Ruy Lopez: Exchange Variation, Keres Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 b7c6": "Ruy Lopez: Exchange Variation, Lutikov Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 d7c6 b1c3 f7f6 d2d3": "Ruy Lopez: Exchange Variation, Romanovsky Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 d7c6 d2d4 e5d4 d1d4 d8d4 f3d4 c8d7": "Ruy Lopez: Exchange, Alekhine Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 d7c6 e1g1 c8g4 h2h3 h7h5": "Ruy Lopez: Exchange Variation, Alapin Gambit", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 d7c6 e1g1 d8d6": "Ruy Lopez: Exchange Variation, Bronstein Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 d7c6 e1g1 f7f6": "Ruy Lopez: Exchange Variation, Gligoric Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 d7c6 e1g1 f8d6": "Ruy Lopez: Exchange Variation, King's Bishop Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 d7c6 e1g1": "Ruy Lopez: Exchange Variation, Normal Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 c6d4": "Ruy Lopez: Bird's Defense Deferred", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6": "Ruy Lopez: Morphy Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 f8b4": "Ruy Lopez: Morphy Defense, Alapin's Defense Deferred", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 b7b5": "Ruy Lopez: Morphy Defense, Caro Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 f8c5": "Ruy Lopez: Morphy Defense, Classical Defense Deferred", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8e7": "Ruy Lopez: Morphy Defense, Cozio Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g7g6": "Ruy Lopez: Morphy Defense, Fianchetto Defense Deferred", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 b7b5 a4b3 f8c5": "Ruy Lopez: Morphy Defense, Graz Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 b7b5 a4b3 c6a5": "Ruy Lopez: Morphy Defense, Norwegian Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 b7b5 a4b3 c6a5 b3f7": "Ruy Lopez: Morphy Defense, Norwegian Variation, Nightingale Gambit", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 f7f5": "Ruy Lopez: Morphy Defense, Schliemann Defense Deferred", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 f7f5 e4f5": "Ruy Lopez: Morphy Defense, Schliemann Defense Deferred, Jaenisch Gambit Deferred", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6": "Ruy Lopez: Morphy Defense, Modern Steinitz Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 b1c3": "Ruy Lopez: Morphy Defense, Modern Steinitz Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 c2c4": "Ruy Lopez: Morphy Defense, Modern Steinitz Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 b7b5 a4b3 d7d6 d2d4 c6d4 f3d4 e5d4 d1d4 c7c5": "Ruy Lopez: Noah's Ark Trap", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 e1g1 c8d7 c2c3 g8f6 d2d4 f8e7 b1d2 e8g8 f1e1 d7e8": "Ruy Lopez: Closed, Kecskemet Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 e1g1": "Ruy Lopez: Morphy Defense, Modern Steinitz Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 a4c6 b7c6 d2d4": "Ruy Lopez: Morphy Defense, Modern Steinitz Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 a4c6 b7c6 d2d4 f7f6": "Ruy Lopez: Morphy Defense, Modern Steinitz Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 c2c3": "Ruy Lopez: Morphy Defense, Modern Steinitz Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 c2c3 f7f5 e4f5 c8f5 e1g1": "Ruy Lopez: Morphy Defense, Modern Steinitz Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 c2c3 f7f5": "Ruy Lopez: Morphy Defense, Modern Steinitz Defense, Siesta Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 c2c3 c8d7": "Ruy Lopez: Morphy Defense, Modern Steinitz Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 c2c3 c8d7 d2d4 g8e7": "Ruy Lopez: Morphy Defense, Modern Steinitz Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 g7g6 c2c3 a7a6 b5a4 d7d6 d2d4 c8d7": "Ruy Lopez: Morphy Defense, Modern Steinitz Defense, Fianchetto Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 d2d3": "Ruy Lopez: Morphy Defense, Anderssen Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 a4c6": "Ruy Lopez: Morphy Defense, Bayreuth Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 d2d3 d7d6 c2c4": "Ruy Lopez: Morphy Defense, Duras Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 c2c3": "Ruy Lopez: Morphy Defense, Jaffe Gambit", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 d2d4": "Ruy Lopez: Morphy Defense, Mackenzie Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 b1c3": "Ruy Lopez: Morphy Defense, Tarrasch Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 d1e2": "Ruy Lopez: Morphy Defense, Wormald Attack", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 d1e2 b7b5 a4b3 f8e7 d2d4 d7d6 c2c3 c8g4": "Ruy Lopez: Wormald Attack, Gr\u00fcnfeld Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 g7g6": "Ruy Lopez: Brix Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 d7d5": "Ruy Lopez: Central Countergambit", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1": "Ruy Lopez: Morphy Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 b7b5 a4b3 d7d6": "Ruy Lopez: Morphy Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 b7b5 a4b3 c8b7": "Ruy Lopez: Morphy Defense, Arkhangelsk Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8c5": "Ruy Lopez: Morphy Defense, Neo-Arkhangelsk Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 b7b5 a4b3 f8e7 a2a4": "Ruy Lopez: Morphy Defense, Wing Attack", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 b7b5 a4b3 d7d6 f3g5 d6d5 e4d5 c6d4 f1e1 f8c5 e1e5 e8f8": "Ruy Lopez: Rabinovich Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 d7d6": "Ruy Lopez: Morphy Defense, Steinitz Deferred", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 d7d6 a4c6 b7c6 d2d4 f6e4": "Ruy Lopez: Morphy Defense, Steinitz Deferred", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 d7d6 a4c6 b7c6 d2d4 f6e4 f1e1 f7f5 d4e5 d6d5 b1c3": "Ruy Lopez: Steinitz Defense Deferred, Boleslavsky Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 d7d6 a4c6 b7c6 d2d4 c8g4": "Ruy Lopez: Steinitz Defense Deferred, Lipnitsky Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d1e2": "Ruy Lopez: Morphy Defense, Tartakower Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4": "Ruy Lopez: Open", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4": "Ruy Lopez: Open", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3": "Ruy Lopez: Open", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5": "Ruy Lopez: Open", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 a2a4 c6d4 f3d4 e5d4 b1c3": "Ruy Lopez: Open, Berger Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 b1d2": "Ruy Lopez: Open, Bernstein Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 b1d2 f8c5 d1e1": "Ruy Lopez: Open, Bernstein Variation, Luther Line", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 f3e5": "Ruy Lopez: Open, Friess Attack", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 c2c4": "Ruy Lopez: Open, Harksen Gambit", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 b1d2 e4c5 c2c3 d5d4 f3g5": "Ruy Lopez: Open, Karpov Gambit", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 b1c3": "Ruy Lopez: Open, Knorre Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6": "Ruy Lopez: Open, Main Line", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 d4d5": "Ruy Lopez: Open, Richter Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 e5d4": "Ruy Lopez: Open, Riga Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 a2a4 c6d4": "Ruy Lopez: Open, Schlechter Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 f1e1 d7d5": "Ruy Lopez: Open, Skipworth Gambit", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c6e7": "Ruy Lopez: Open, Zukertort Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 d1e2": "Ruy Lopez: Open, Howell Attack", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 d1e2 f8e7 c2c4": "Ruy Lopez: Open, Howell Attack", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 d1e2 f8e7 f1d1 e8g8 c2c4 b5c4 b3c4 d8d7": "Ruy Lopez: Open, Howell Attack, Ekstrom Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3": "Ruy Lopez: Open", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 e4c5": "Ruy Lopez: Open, Berlin Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8c5 b1d2 e8g8 b3c2 e4f2": "Ruy Lopez: Open, Dilworth Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8c5": "Ruy Lopez: Open, Italian Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8c5 d1d3": "Ruy Lopez: Open, Motzko Attack", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8c5 d1d3 c6e7": "Ruy Lopez: Open, Motzko Attack, Nenarokov Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8c5 b1d2": "Ruy Lopez: Open, St. Petersburg Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8e7 f1e1 e8g8 f3d4 c6e5": "Ruy Lopez: Open, Breslau Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8e7": "Ruy Lopez: Open, Classical Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 f8e7 f1e1 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3": "Ruy Lopez: Open, Classical Defense, Main Line", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8e7 b1d2 e8g8 d1e2": "Ruy Lopez: Open, Malkin Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8e7 f1e1 e8g8 f3d4 d8d7 d4e6 f7e6 e1e4": "Ruy Lopez: Open, Tarrasch Trap", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7": "Ruy Lopez: Closed", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 d2d4 e5d4 e4e5 f6e4 c2c3": "Ruy Lopez: Closed, Basque Gambit", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 d2d4": "Ruy Lopez: Closed, Center Attack", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 d2d4 e5d4 e4e5 f6e4 c2c3 d4c3": "Ruy Lopez: Closed, Center Attack, Basque Gambit", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 d2d3": "Ruy Lopez: Closed, Martinez Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 b1c3": "Ruy Lopez: Closed, Morphy Attack", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 a4c6": "Ruy Lopez: Closed, Delayed Exchange", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 d1e2": "Ruy Lopez: Closed, Worrall Attack", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 d1e2 b7b5 a4b3 e8g8": "Ruy Lopez: Closed, Worrall Attack, Castling Line", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 d1e2 b7b5 a4b3 d7d6": "Ruy Lopez: Closed, Worrall Attack, Delayed Castling Line", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 d7d6": "Ruy Lopez: Closed, Averbakh Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3": "Ruy Lopez: Closed", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8": "Ruy Lopez: Closed", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 c6a5 b3c2 c7c5 d2d4 d8c7 b1d2 e8g8 d2f1 c8g4 f1e3 g4f3 d1f3": "Ruy Lopez: Closed, Alekhine Gambit", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 a2a4": "Ruy Lopez: Closed, Anti-Marshall", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 c6a5 b3c2 c7c5 d2d4 d8c7 a2a4": "Ruy Lopez: Closed, Balla Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 c6a5 b3c2 c7c5 d2d4 d8c7 h2h3 a5c6 d4d5 c6b8 b1d2 g7g5": "Ruy Lopez: Closed, Leonhardt Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 d2d4": "Ruy Lopez: Closed, Rosen Attack", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 c8b7": "Ruy Lopez: Closed, Trajkovic Counterattack", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 d2d4 c6d4 f3d4 e5d4 d1d4 c7c5": "Ruy Lopez: Noah's Ark Trap", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d5": "Ruy Lopez: Marshall Attack", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d5 e4d5 f6d5 f3e5 c6e5 e1e5 c7c6 d2d4": "Ruy Lopez: Marshall Attack, Main Line", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d5 e4d5 f6d5 f3e5 c6e5 e1e5 c7c6 d2d4 e7d6 e5e1 d8h4 g2g3 h4h3 c1e3 c8g4 d1d3 a8e8 b1d2 e8e6 a2a4 h3h5": "Ruy Lopez: Marshall Attack, Main Line, Spassky Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d5 e4d5 f6d5 f3e5 c6e5 e1e5 c7c6 d2d4 e7d6 e5e1 d8h4 g2g3 h4h3": "Ruy Lopez: Marshall Attack, Modern Main Line", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d5 e4d5 f6d5 f3e5 c6e5 e1e5 c7c6": "Ruy Lopez: Marshall Attack, Modern Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d5 e4d5 f6d5 f3e5 c6e5 e1e5 d5f6": "Ruy Lopez: Marshall Attack, Original Marshall Attack", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d5 e4d5 f6d5 f3e5 c6e5 e1e5 c7c6 b3d5 c6d5 d2d4 e7d6 e5e3": "Ruy Lopez: Marshall Attack, Re3 Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d5 e4d5 e5e4": "Ruy Lopez: Marshall Attack, Steiner Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8": "Ruy Lopez: Closed", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 b3c2": "Ruy Lopez: Closed, Lutikov Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 d2d3 d7d6 c2c3": "Ruy Lopez: Closed, Pilnik Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 a2a3": "Ruy Lopez: Closed, Suetin Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 d2d4 c8g4": "Ruy Lopez: Closed, Bogoljubow Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 d2d4": "Ruy Lopez: Closed, Yates Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 d2d4 c8g4 a2a4": "Ruy Lopez: Closed, Yates Variation, Short Attack", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 h2h3": "Ruy Lopez: Closed", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 h2h3 c8b7": "Ruy Lopez: Closed, Flohr System", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 h2h3 f6d7": "Ruy Lopez: Closed, Karpov Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 h2h3 c8e6": "Ruy Lopez: Closed, Kholmov Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 h2h3 c8b7 d2d4 f8e8 b1d2 e7f8 a2a3 h7h6": "Ruy Lopez: Closed, Smyslov-Breyer-Zaitsev Hybrid", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 h2h3 f8e8": "Ruy Lopez: Closed, Zaitsev System", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 h2h3 h7h6": "Ruy Lopez: Closed, Smyslov Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 h2h3 c6b8": "Ruy Lopez: Closed, Breyer Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 h2h3 c6b8 d2d3": "Ruy Lopez: Closed, Breyer Defense, Quiet Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 h2h3 c6b8 d2d4": "Ruy Lopez: Closed, Breyer", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 h2h3 c6b8 d2d4 b8d7 b1d2 c8b7 b3c2 c7c5": "Ruy Lopez: Closed, Breyer Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 h2h3 c6b8 d2d4 b8d7 f3h4": "Ruy Lopez: Closed, Breyer Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 h2h3 c6b8 d2d4 b8d7": "Ruy Lopez: Closed, Breyer Defense, Zaitsev Hybrid", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 h2h3 c6a5 b3c2 c7c5 d2d4 a5c6": "Ruy Lopez: Closed, Borisenko Variation", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 h2h3 c6a5 b3c2": "Ruy Lopez: Closed, Chigorin Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 h2h3 c6a5 b3c2 c7c5": "Ruy Lopez: Closed, Chigorin Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 h2h3 c6a5 b3c2 d6d5": "Ruy Lopez: Closed, Chigorin Defense, Gajewski Gambit", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 h2h3 c6a5 b3c2 c7c5 d2d4 f6d7": "Ruy Lopez: Closed, Keres Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 h2h3 c6a5 b3c2 c7c6 d2d4 d8c7": "Ruy Lopez: Closed, Rossolimo Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 h2h3 c6a5": "Ruy Lopez: Closed, Chigorin Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 h2h3 c6a5 b3c2 c7c5 d2d4 d8c7": "Ruy Lopez: Closed, Chigorin Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 h2h3 c6a5 b3c2 c7c5 d2d4 d8c7 b1d2 c8d7 d2f1 f8e8 f1e3 g7g6": "Ruy Lopez: Closed, Chigorin, Yugoslav System", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 h2h3 c6a5 b3c2 c7c5 d2d4 d8c7 b1d2 a5c6": "Ruy Lopez: Closed, Chigorin Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 h2h3 c6a5 b3c2 c7c5 d2d4 d8c7 b1d2 a5c6 d4c5": "Ruy Lopez: Closed, Chigorin Defense", "e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 e8g8 h2h3 c6a5 b3c2 c7c5 d2d4 d8c7 b1d2 c5d4 c3d4": "Ruy Lopez: Closed, Chigorin Defense, Panov System", "d2d4 d7d5 d1d3": "Amazon Attack", "d2d4 d7d5 e2e4": "Blackmar-Diemer Gambit", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6": "Blackmar-Diemer Gambit", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 e4f3": "Blackmar-Diemer Gambit Accepted", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 e4f3 g1f3 g7g6": "Blackmar-Diemer Gambit Accepted: Bogoljubow Defense", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 e4f3 g1f3 g7g6 f1c4 f8g7 e1g1 e8g8 g1h1": "Blackmar-Diemer Gambit Accepted: Bogoljubow Defense, Kloss Attack", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 e4f3 g1f3 g7g6 f1c4 f8g7 h2h4": "Blackmar-Diemer Gambit Accepted: Bogoljubow Defense, Mad Dog Attack", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 e4f3 g1f3 g7g6 f1c4 f8g7 f3e5": "Blackmar-Diemer Gambit Accepted: Bogoljubow Defense, Nimzowitsch Attack", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 e4f3 g1f3 g7g6 f1c4 f8g7 e1g1 e8g8 d1e1": "Blackmar-Diemer Gambit Accepted: Bogoljubow Defense, Studier Attack", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 e4f3 g1f3 e7e6": "Blackmar-Diemer Gambit Accepted: Euwe Defense", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 e4f3 g1f3 e7e6 c1g5 f8e7 f1d3 b8c6 e1g1 c6d4 g1h1": "Blackmar-Diemer Gambit Accepted: Euwe Defense, Zilbermints Gambit", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 e4f3 g1f3 c8f5": "Blackmar-Diemer Gambit Accepted: Gunderam Defense", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 e4f3 g1f3 c8f5 f3e5 e7e6 g2g4 f5e4": "Blackmar-Diemer Gambit Accepted: Gunderam Defense, Stader Variation", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 e4f3 g1f3 d8d6": "Blackmar-Diemer Gambit Accepted: Holwell Defense", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 e4f3 g1f3 c7c5": "Blackmar-Diemer Gambit Accepted: Kaulich Defense", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 e4f3 g1f3 b8c6": "Blackmar-Diemer Gambit Accepted: Pietrowsky Defense", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 e4f3 g1f3 b7b6": "Blackmar-Diemer Gambit Accepted: Ritter Defense", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 e4f3 d1f3": "Blackmar-Diemer Gambit Accepted: Ryder Gambit", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 e4f3 g1f3 b8d7": "Blackmar-Diemer Gambit Accepted: Schlutter Defense", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 e4f3 g1f3 c8g4": "Blackmar-Diemer Gambit Accepted: Teichmann Defense", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 e4f3 g1f3 c8g4 h2h3 g4f3 d1f3 c7c6 f3f2": "Blackmar-Diemer Gambit Accepted: Teichmann Defense, Ciesielski Variation", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 e4f3 g1f3 c8g4 h2h3 g4f3 d1f3 c7c6 c1e3": "Blackmar-Diemer Gambit Accepted: Teichmann Defense, Classical Variation", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 e4f3 g1f3 c8g4 h2h3 g4f3 d1f3 c7c6 g2g4": "Blackmar-Diemer Gambit Accepted: Teichmann Defense, Seidel-Hall Attack", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 e4f3 g1f3 c7c6": "Blackmar-Diemer Gambit Accepted: Ziegler Defense", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 c7c5": "Blackmar-Diemer Gambit Declined: Brombacher Countergambit", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 e7e5": "Blackmar-Diemer Gambit Declined: Elbert Countergambit", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 a7a6": "Blackmar-Diemer Gambit Declined: Gedult Defense", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 b8c6": "Blackmar-Diemer Gambit Declined: Lamb Defense", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 e4e3": "Blackmar-Diemer Gambit Declined: Langeheinicke Defense", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 c7c6": "Blackmar-Diemer Gambit Declined: O'Kelly Defense", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 c8f5": "Blackmar-Diemer Gambit Declined: Vienna Defense", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 f2f3 e7e6": "Blackmar-Diemer Gambit Declined: Weinsbach Defense", "d2d4 d7d5 e2e4 d5e4 f2f3": "Blackmar-Diemer Gambit: Blackmar Gambit", "d2d4 d7d5 e2e4 d5e4 c1e3": "Blackmar-Diemer Gambit: Diemer-Rosenberg Attack", "d2d4 d7d5 e2e4 d5e4 f1c4": "Blackmar-Diemer Gambit: Fritz Attack", "d2d4 d7d5 e2e4 d5e4 b1c3 e7e5": "Blackmar-Diemer Gambit: Lemberger Countergambit", "d2d4 d7d5 e2e4 d5e4 b1c3 e7e5 d4e5": "Blackmar-Diemer Gambit: Lemberger Countergambit, Endgame Variation", "d2d4 d7d5 e2e4 d5e4 b1c3 e7e5 c3e4": "Blackmar-Diemer Gambit: Lemberger Countergambit, Lange Gambit", "d2d4 d7d5 e2e4 d5e4 b1c3 e7e5 g1e2": "Blackmar-Diemer Gambit: Lemberger Countergambit, Rasmussen Attack", "d2d4 d7d5 e2e4 d5e4 b1c3 e7e5 d1h5": "Blackmar-Diemer Gambit: Lemberger Countergambit, Sneiders Attack", "d2d4 d7d5 e2e4 d5e4 b1c3 e7e5 c1e3": "Blackmar-Diemer Gambit: Lemberger Countergambit, Soller Attack", "d2d4 d7d5 e2e4 d5e4 b1c3 f7f5": "Blackmar-Diemer Gambit: Netherlands Variation", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 c1e3": "Blackmar-Diemer Gambit: Rasa-Studier Gambit", "d2d4 d7d5 e2e4 d5e4 b1c3 c7c5": "Blackmar-Diemer Gambit: Reversed Albin Countergambit", "d2d4 d7d5 e2e4 d5e4 b1c3 c8f5": "Blackmar-Diemer Gambit: Zeller Defense", "d2d4 d7d5 e2e4 d5e4 b1c3 c8f5 f2f3 g8f6 f1c4": "Blackmar-Diemer Gambit: Zeller Defense, Soller Attack", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 c1g5": "Blackmar-Diemer Gambit: von Popiel Gambit", "d2d4 d7d5 e2e4 d5e4 b1c3 g8f6 c1g5 c8f5 g5f6 e7f6 g2g4 f5g6 d1e2 f8b4 e2b5": "Blackmar-Diemer Gambit: von Popiel Gambit, Zilbermints Variation", "d2d4 d7d5": "Queen's Pawn Game", "d2d4 d7d5 e2e3": "Queen's Pawn Game", "d2d4 d7d5 e2e3 g8f6": "Queen's Pawn Game", "d2d4 d7d5 c1f4": "Queen's Pawn Game: Accelerated London System", "d2d4 d7d5 c1f4 c7c5": "Queen's Pawn Game: Accelerated London System, Steinitz Countergambit", "d2d4 d7d5 c1f4 c7c5 d4c5": "Queen's Pawn Game: Accelerated London System, Steinitz Countergambit Accepted", "d2d4 d7d5 c1f4 c7c5 e2e4": "Queen's Pawn Game: Accelerated London System, Steinitz Countergambit, Morris Countergambit", "d2d4 d7d5 c1f4 c7c5 e2e4 d5e4": "Queen's Pawn Game: Accelerated London System, Steinitz Countergambit, Morris Countergambit Accepted", "d2d4 d7d5 b1c3": "Queen's Pawn Game: Chigorin Variation", "d2d4 d7d5 b1c3 e7e6": "Queen's Pawn Game: Chigorin Variation", "d2d4 d7d5 b1c3 c8f5": "Queen's Pawn Game: Chigorin Variation, Alburt Defense", "d2d4 d7d5 b1c3 c8g4": "Queen's Pawn Game: Chigorin Variation, Anti-Veresov", "d2d4 g7g6 g1f3 f8g7 b1c3 d7d5": "Queen's Pawn Game: Chigorin Variation, Fianchetto Defense", "d2d4 d7d5 b1c3 c7c5": "Queen's Pawn Game: Chigorin Variation, Irish Gambit", "d2d4 d7d5 b1c3 e7e5": "Queen's Pawn Game: Chigorin Variation, Shaviliuk Gambit", "d2d4 d7d5 b1c3 h7h5": "Queen's Pawn Game: Chigorin Variation, Shropshire Defense", "d2d4 g8f6 b1c3 d7d5 e2e4": "Queen's Pawn Game: H\u00fcbsch Gambit", "d2d4 d7d5 c1g5": "Queen's Pawn Game: Levitsky Attack", "d2d4 d7d5 c1g5 c8g4": "Queen's Pawn Game: Levitsky Attack, Welling Variation", "d2d4 d7d5 f2f4": "Queen's Pawn Game: Mason Attack", "d2d4 d7d5 e2e3 g8f6 f1d3": "Queen's Pawn Game: Stonewall Attack", "d2d4 d7d5 g2g4": "Queen's Pawn Game: Zurich Gambit", "d2d4 d7d5 b1c3 g8f6 c1f4": "Rapport-Jobava System", "d2d4 d7d5 b1c3 g8f6 c1f4 e7e6": "Rapport-Jobava System", "d2d4 d7d5 b1c3 g8f6 c1f4 g7g6": "Rapport-Jobava System", "d2d4 d7d5 b1c3 e7e6 c1f4": "Rapport-Jobava System, with e6", "d2d4 g8f6 b1c3 d7d5 c1g5": "Richter-Veresov Attack", "d2d4 g8f6 b1c3 d7d5 c1g5 c8f5": "Richter-Veresov Attack", "d2d4 g8f6 b1c3 d7d5 c1g5 f6e4": "Richter-Veresov Attack: Boyce Defense", "d2d4 g8f6 b1c3 d7d5 c1g5 c7c5 g5f6 g7f6 e2e4 d5e4 d4d5": "Richter-Veresov Attack: Malich Gambit", "d2d4 g8f6 b1c3 d7d5 c1g5 c8f5 f2f3": "Richter-Veresov Attack: Richter Variation", "d2d4 g8f6 b1c3 d7d5 c1g5 b8d7 g1f3": "Richter-Veresov Attack: Two Knights System", "d2d4 g8f6 b1c3 d7d5 c1g5 b8d7 g1f3 g7g6": "Richter-Veresov Attack: Two Knights System, Gr\u00fcnfeld Defense", "d2d4 g8f6 b1c3 d7d5 c1g5 c8f5 g5f6": "Richter-Veresov Attack: Veresov Variation", "d2d4 g8f6 g1f3 d7d5 c1f4 c7c5 e2e3 d8b6 b1c3": "London System: Poisoned Pawn Variation", "d2d4 d7d5 g1f3 c8f5 c2c4 e7e6 b1c3 c7c6": "Queen's Gambit Declined: Baltic Defense, Pseudo-Slav", "g1f3 d7d5 d2d4 c8g4": "Queen's Pawn Game: Anti-Torre", "d2d4 d7d5 g1f3 c7c5 g2g3 c5d4 f1g2": "Queen's Pawn Game: Chandler Gambit", "d2d4 d7d5 g1f3 b8c6": "Queen's Pawn Game: Chigorin Variation", "d2d4 d7d5 g1f3 c7c5": "Queen's Pawn Game: Krause Variation", "d2d4 d7d5 g1f3 c7c6 c1g5 h7h6 g5h4 d8b6": "Queen's Pawn Game: Levitsky Attack, Euwe Variation, Modern Line", "d2d4 d7d5 g1f3 g8f6 c1f4": "Queen's Pawn Game: London System", "d2d4 g7g6 g1f3 f8g7 c1f4 c7c5 c2c3 c5d4 c3d4 d8a5": "Queen's Pawn Game: London System, Pterodactyl Variation", "d2d4 d7d5 g1f3 e7e6 c1f4": "Queen's Pawn Game: London System, with e6", "d2d4 d7d5 g1f3 g8f6": "Queen's Pawn Game: Symmetrical Variation", "d2d4 d7d5 g1f3 g8f6 g2g3": "Queen's Pawn Game: Symmetrical Variation, Pseudo-Catalan", "d2d4 d7d5 g1f3 g8f6 c2c4 b7b5": "Queen's Pawn Game: Zilbermints Countergambit", "d2d4 d7d5 g1f3": "Queen's Pawn Game: Zukertort Variation", "d2d4 d7d5 g1f3 g8f6 c1g5": "Queen's Pawn Game: Torre Attack", "d2d4 d7d5 g1f3 g8f6 c1g5 f6e4": "Queen's Pawn Game: Torre Attack, Gossip Variation", "d2d4 d7d5 g1f3 g8f6 c1g5 g7g6": "Queen's Pawn Game: Torre Attack, Gr\u00fcnfeld Variation", "d2d4 d7d5 g1f3 g8f6 e2e3": "Queen's Pawn Game: Colle System", "d2d4 d7d5 g1f3 g8f6 e2e3 c8f5": "Queen's Pawn Game: Colle System, Anti-Colle", "d2d4 d7d5 g1f3 g8f6 e2e3 g7g6 f1d3 f8g7": "Queen's Pawn Game: Colle System, Gr\u00fcnfeld Formation", "d2d4 d7d5 g1f3 g8f6 e2e3 e7e6": "Queen's Pawn Game: Colle System", "d2d4 d7d5 g1f3 g8f6 e2e3 e7e6 f1d3": "Queen's Pawn Game: Colle System", "d2d4 g8f6 g1f3 e7e6 e2e3 c7c5 f1d3 d7d5 c2c3": "Queen's Pawn Game: Colle System, Traditional Colle", "d2d4 d7d5 g1f3 c7c5 e2e3 g8f6 b1d2 e7e6 b2b3": "Queen's Pawn Game: Zukertort Variation", "d2d4 g8f6 g1f3 e7e6 e2e3 c7c5 f1d3 d7d5 b2b3": "Rubinstein Opening", "d2d4 g8f6 g1f3 e7e6 e2e3 c7c5 f1d3 d7d5 b2b3 b8c6 e1g1 f8d6 c1b2 e8g8": "Rubinstein Opening: Bogoljubow Defense", "d2d4 g8f6 g1f3 e7e6 e2e3 c7c5 f1d3 d7d5 b2b3 b8c6 e1g1 f8e7 c1b2 e8g8": "Rubinstein Opening: Classical Defense", "d2d4 d7d5 g1f3 g8f6 e2e3 e7e6 f1d3 f8d6 e1g1 e8g8 b2b3 b8d7 c1b2": "Rubinstein Opening: Semi-Slav Defense", "d2d4 d7d5 c2c4": "Queen's Gambit", "d2d4 d7d5 c2c4 c7c5 d4c5 d5d4": "Queen's Gambit Declined: Austrian Attack, Salvio Countergambit", "d2d4 d7d5 c2c4 c7c5": "Queen's Gambit Declined: Austrian Defense", "d2d4 d7d5 c2c4 c7c5 c4d5 g8f6": "Queen's Gambit Declined: Austrian Defense, Gusev Countergambit", "d2d4 d7d5 c2c4 c7c5 c4d5 g8f6 e2e4 f6e4 d4c5 d8a5": "Queen's Gambit Declined: Austrian Defense, Haberditz Variation", "d2d4 d7d5 c2c4 c8f5": "Queen's Gambit Declined: Baltic Defense", "d2d4 d7d5 c2c4 c8f5 c4d5 f5b1 d1a4 c7c6 d5c6 b8c6": "Queen's Gambit Declined: Baltic Defense, Argentinian Gambit", "d2d4 d7d5 c2c4 c8f5 b1c3 e7e6 g1f3 b8c6": "Queen's Gambit Declined: Baltic Defense, Pseudo-Chigorin", "d2d4 d7d5 c2c4 c8f5 d1b3": "Queen's Gambit Declined: Baltic Defense, Queen Attack", "d2d4 d7d5 c2c4 c8f5 b1c3 e7e6 d1b3": "Queen's Gambit Declined: Baltic Defense, Queen Attack Deferred", "d2d4 d7d5 c2c4 g8f6": "Queen's Gambit Declined: Marshall Defense", "d2d4 d7d5 c2c4 g8f6 c4d5 c7c6": "Queen's Gambit Declined: Marshall Defense, Tan Gambit", "d2d4 d7d5 c2c4 b7b5": "Queen's Gambit Declined: Zilbermints Gambit", "d2d4 d7d5 c2c4 b8c6": "Queen's Gambit Declined: Chigorin Defense", "d2d4 d7d5 c2c4 b8c6 b1c3": "Queen's Gambit Declined: Chigorin Defense", "d2d4 d7d5 c2c4 b8c6 b1c3 d5c4": "Queen's Gambit Declined: Chigorin Defense", "d2d4 d7d5 c2c4 b8c6 c4d5 d8d5": "Queen's Gambit Declined: Chigorin Defense, Exchange Variation", "d2d4 d7d5 c2c4 b8c6 c4d5 d8d5 e2e3 e7e5 b1c3 f8b4 c1d2 b4c3 d2c3 e5d4 g1e2": "Queen's Gambit Declined: Chigorin Defense, Exchange Variation, Costa's Line", "d2d4 d7d5 c2c4 b8c6 b1c3 d5c4 g1f3": "Queen's Gambit Declined: Chigorin Defense, Janowski Variation", "d2d4 d7d5 c2c4 b8c6 g1f3 e7e5": "Queen's Gambit Declined: Chigorin Defense, Lazard Gambit", "d2d4 d7d5 c2c4 b8c6 g1f3 c8g4": "Queen's Gambit Declined: Chigorin Defense, Main Line", "d2d4 d7d5 c2c4 b8c6 g1f3 c8g4 d1a4": "Queen's Gambit Declined: Chigorin Defense, Main Line, Alekhine Variation", "d2d4 d7d5 c2c4 b8c6 b1c3 d5c4 g1f3 g8f6": "Queen's Gambit Declined: Chigorin Defense, Modern Gambit", "d2d4 d7d5 c2c4 b8c6 b1c3 e7e5": "Queen's Gambit Declined: Chigorin Defense, Tartakower Gambit", "d2d4 d7d5 c2c4 e7e5": "Queen's Gambit Declined: Albin Countergambit", "d2d4 d7d5 c2c4 e7e5 d4e5 d5d4 g1f3 b8c6 b1d2 d8e7": "Queen's Gambit Declined: Albin Countergambit, Balogh Variation", "d2d4 d7d5 c2c4 e7e5 d4e5 d5d4 g1f3 b8c6 b1d2 f7f6": "Queen's Gambit Declined: Albin Countergambit, Janowski Variation", "d2d4 d7d5 c2c4 e7e5 d4e5 d5d4 g1f3 b8c6 b1d2 c8g4 h2h3 g4f3 d2f3 f8b4 c1d2 d8e7": "Queen's Gambit Declined: Albin Countergambit, Krenosz Variation", "d2d4 d7d5 c2c4 e7e5 d4e5 d5d4 e2e3 f8b4 c1d2 d4e3": "Queen's Gambit Declined: Albin Countergambit, Lasker Trap", "d2d4 d7d5 c2c4 e7e5 d4e5 d5d4 g1f3 b8c6 b1d2": "Queen's Gambit Declined: Albin Countergambit, Modern Line", "d2d4 d7d5 c2c4 e7e5 d4e5 d5d4 g1f3": "Queen's Gambit Declined: Albin Countergambit, Normal Line", "d2d4 d7d5 c2c4 e7e5 d4e5 d5d4 g1f3 c7c5": "Queen's Gambit Declined: Albin Countergambit, Tartakower Defense", "d2d4 d7d5 c2c4 e7e5 d4e5 d5d4 g1f3 b8c6 g2g3": "Queen's Gambit Declined: Albin Countergambit, Fianchetto Variation", "d2d4 d7d5 c2c4 e7e5 d4e5 d5d4 g1f3 b8c6 g2g3 c8e6": "Queen's Gambit Declined: Albin Countergambit, Fianchetto Variation, Be6 Line", "d2d4 d7d5 c2c4 e7e5 d4e5 d5d4 g1f3 b8c6 g2g3 c8f5": "Queen's Gambit Declined: Albin Countergambit, Fianchetto Variation, Bf5 Line", "d2d4 d7d5 c2c4 e7e5 d4e5 d5d4 g1f3 b8c6 g2g3 c8g4": "Queen's Gambit Declined: Albin Countergambit, Fianchetto Variation, Bg4 Line", "d2d4 d7d5 c2c4 c7c6": "Slav Defense", "d2d4 d7d5 c2c4 c7c6 b1c3": "Slav Defense", "d2d4 d7d5 c2c4 c7c6 b1c3 d5c4": "Slav Defense", "d2d4 d7d5 c2c4 c7c6 e2e4": "Slav Defense: Diemer Gambit", "d2d4 d7d5 c2c4 c7c6 c4d5": "Slav Defense: Exchange Variation", "d2d4 d7d5 c2c4 c7c6 c4d5 c6d5 b1c3 g8f6 f2f3": "Slav Defense: Exchange Variation, Boor Attack", "d2d4 d7d5 c2c4 c7c6 b1c3 d5c4 e2e4": "Slav Defense: Slav Gambit, Alekhine Attack", "d2d4 d7d5 c2c4 c7c6 b1c3 e7e5": "Slav Defense: Winawer Countergambit", "d2d4 d7d5 c2c4 c7c6 b1c3 e7e5 e2e4": "Slav Defense: Winawer Countergambit, Anti-Winawer Gambit", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 c1g5": "Slav Defense: Bonet Gambit", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1d2": "Slav Defense: Breyer Variation", "d2d4 d7d5 c2c4 c7c6 g1f3": "Slav Defense: Modern Line", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 e2e3": "Slav Defense: Quiet Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 e2e3 c8g4": "Slav Defense: Quiet Variation, Pin Defense", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 e2e3 c8f5 c4d5 c6d5 b1c3 e7e6 f3e5 f6d7": "Slav Defense: Quiet Variation, Amsterdam Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 e2e3 c8f5 c4d5 c6d5 d1b3 d8c8 c1d2 e7e6 b1a3": "Slav Defense: Quiet Variation, Landau Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 e2e3 c8f5": "Slav Defense: Quiet Variation, Schallopp Defense", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 c4d5 c6d5": "Slav Defense: Exchange Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 e2e3 c8f5 c4d5 c6d5 b1c3": "Slav Defense: Exchange Variation, Schallopp Variation", "d2d4 d7d5 c2c4 c7c6 c4d5 c6d5 b1c3 g8f6 g1f3 b8c6 c1f4 c8f5": "Slav Defense: Exchange Variation, Symmetrical Line", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 c4d5 c6d5 b1c3 b8c6 c1f4 c8f5 e2e3 e7e6 d1b3 f8b4": "Slav Defense: Exchange Variation, Trifunovic Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 e2e3": "Slav Defense: Alekhine Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 a7a6": "Slav Defense: Chebanenko Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 a7a6 c4c5": "Slav Defense: Chebanenko Variation, Advance System", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 e2e4": "Slav Defense: Geller Gambit", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 e2e4 b7b5 e4e5": "Slav Defense: Geller Gambit", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 g7g6": "Slav Defense: Schlechter Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d8b6": "Slav Defense: S\u00fcchting Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3": "Slav Defense: Three Knights Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4": "Slav Defense: Two Knights Attack", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4": "Slav Defense: Alapin Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 b8a6": "Slav Defense: Smyslov Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 e7e6": "Slav Defense: Soultanbeieff Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8g4": "Slav Defense: Steiner Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5": "Slav Defense: Czech Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 f3h4": "Slav Defense: Czech Variation, Bled Attack", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 f3e5 b8d7 e5c4 d8c7 g2g3 e7e5": "Slav Defense: Czech Variation, Carlsbad Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 f3e5 b8d7 e5c4 d8c7 g2g3 e7e5 d4e5 d7e5 c1f4 f6d7 f1g2 g7g5": "Slav Defense: Czech Variation, Carlsbad Variation, Morozevich Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 f3e5": "Slav Defense: Czech Variation, Krause Attack", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 f3e5 b8a6 e2e4": "Slav Defense: Czech Variation, Krause Attack, Fazekas Gambit", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 f3e5 e7e6": "Slav Defense: Czech Variation, Wiesbaden Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 f3e5 e7e6 f2f3 f8b4 e2e4": "Slav Defense: Czech Variation, Wiesbaden Variation, Sharp Line", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 e2e3": "Slav Defense: Czech Variation, Classical System", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 e2e3 b8a6": "Slav Defense: Czech Variation, Lasker Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 e2e3 e7e6 f1c4 f8b4 e1g1 e8g8 d1e2": "Slav Defense: Czech Variation, Classical System, Main Line", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 e2e3 e7e6 f1c4 f8b4 e1g1": "Slav Defense: Czech Variation, Dutch Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 e2e3 e7e6 f1c4 f8b4 e1g1 e8g8 d1e2 f6e4 g2g4": "Slav Defense: Czech Variation, Dutch Variation, S\u00e4misch Variation", "d2d4 d7d5 c2c4 d5c4": "Queen's Gambit Accepted", "d2d4 d7d5 c2c4 d5c4 d1a4": "Queen's Gambit Accepted: Accelerated Mannheim Variation", "d2d4 d7d5 c2c4 d5c4 e2e4 g8f6": "Queen's Gambit Accepted: Central Variation, Alekhine System", "d2d4 d7d5 c2c4 d5c4 e2e4 b7b5": "Queen's Gambit Accepted: Central Variation, Greco Variation", "d2d4 d7d5 c2c4 d5c4 e2e4 e7e5": "Queen's Gambit Accepted: Central Variation, McDonnell Defense", "d2d4 d7d5 c2c4 d5c4 e2e4 e7e5 f1c4": "Queen's Gambit Accepted: Central Variation, McDonnell Defense, Somov Gambit", "d2d4 d7d5 c2c4 d5c4 e2e4 b8c6": "Queen's Gambit Accepted: Central Variation, Modern Defense", "d2d4 d7d5 c2c4 d5c4 e2e4 c7c5": "Queen's Gambit Accepted: Central Variation, Rubinstein Defense", "d2d4 d7d5 c2c4 d5c4 e2e4 c7c5 d4d5 b7b5": "Queen's Gambit Accepted: Central Variation, Rubinstein Defense, Yefimov Gambit", "d2d4 d7d5 c2c4 d5c4 e2e4 c7c5 d4d5 g8f6 b1c3 b7b5": "Queen's Gambit Accepted: Linares Variation", "d2d4 d7d5 c2c4 d5c4 e2e3": "Queen's Gambit Accepted: Old Variation", "d2d4 d7d5 c2c4 d5c4 e2e3 e7e5 f1c4 e5d4 d1b3 d8e7 a2a3": "Queen's Gambit Accepted: Old Variation, Billinger Gambit", "d2d4 d7d5 c2c4 d5c4 e2e3 e7e5 f1c4 e5d4 d1b3 d8e7 g1f3": "Queen's Gambit Accepted: Old Variation, Christensen Gambit", "d2d4 d7d5 c2c4 d5c4 e2e3 e7e5 f1c4 e5d4 d1b3 d8e7 e1f1": "Queen's Gambit Accepted: Old Variation, Korchnoi Gambit", "d2d4 d7d5 c2c4 d5c4 e2e3 e7e5 f1c4 e5d4 d1b3 d8e7 b1d2": "Queen's Gambit Accepted: Old Variation, Novikov Gambit", "d2d4 d7d5 c2c4 d5c4 e2e4": "Queen's Gambit Accepted: Saduleto Variation", "d2d4 d7d5 c2c4 d5c4 e2e4 f7f5": "Queen's Gambit Accepted: Schwartz Defense", "d2d4 d7d5 c2c4 d5c4 g1f3 a7a6 e2e4": "Queen's Gambit Accepted: Alekhine Defense, Borisenko-Furman Variation", "d2d4 d7d5 c2c4 d5c4 g1f3 b8d7": "Queen's Gambit Accepted: Godes Variation", "d2d4 d7d5 c2c4 d5c4 g1f3 c7c5": "Queen's Gambit Accepted: Gunsberg Defense", "d2d4 d7d5 c2c4 d5c4 g1f3": "Queen's Gambit Accepted: Normal Variation", "d2d4 d7d5 c2c4 d5c4 g1f3 e7e6": "Queen's Gambit Accepted: Rosenthal Variation", "d2d4 d7d5 c2c4 d5c4 g1f3 b7b5": "Queen's Gambit Accepted: Slav Gambit", "d2d4 d7d5 c2c4 d5c4 g1f3 a7a6": "Queen's Gambit Accepted: Alekhine Defense", "d2d4 d7d5 c2c4 d5c4 g1f3 a7a6 e2e3 c8g4 f1c4 e7e6 d4d5": "Queen's Gambit Accepted: Alekhine Defense, Alatortsev Variation", "d2d4 d7d5 c2c4 d5c4 g1f3 a7a6 e2e3 b7b5": "Queen's Gambit Accepted: Alekhine Defense, Haberditz Variation", "d2d4 d7d5 c2c4 d5c4 g1f3 g8f6": "Queen's Gambit Accepted", "d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 d1a4": "Queen's Gambit Accepted: Mannheim Variation", "d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 b1c3 a7a6 e2e4": "Queen's Gambit Accepted: Bogoljubow Defense", "d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 b1c3 c7c5 d4d5 e7e6 e2e4 e6d5 e4e5": "Queen's Gambit Accepted: Gunsberg Defense, Prianishenmo Gambit", "d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 b1c3": "Queen's Gambit Accepted: Showalter Variation", "d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 c8g4": "Queen's Gambit Accepted: Janowski-Larsen Variation", "d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3": "Queen's Gambit Accepted: Normal Variation", "d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 g7g6": "Queen's Gambit Accepted: Smyslov Variation", "d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 c8e6": "Queen's Gambit Accepted: Winawer Defense", "d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5": "Queen's Gambit Accepted: Classical Defense", "d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1": "Queen's Gambit Accepted: Classical Defense, Normal Line", "d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 b8c6": "Queen's Gambit Accepted: Classical Defense, Steinitz Variation, Development Variation", "d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 c5d4": "Queen's Gambit Accepted: Classical Defense, Steinitz Variation, Exchange Variation", "d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 d1e2 a7a6 d4c5 f8c5 e1g1 b8c6 e3e4 b7b5 e4e5": "Queen's Gambit Accepted: Classical, Furman Variation", "d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6": "Queen's Gambit Accepted: Normal Variation, Traditional System", "d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 a7a6": "Queen's Gambit Accepted: Classical Defense, Main Line", "d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 a7a6 a2a4": "Queen's Gambit Accepted: Classical Defense, Rubinstein Variation", "d2d4 d7d5 c2c4 d5c4 e2e3 g8f6 f1c4 e7e6 g1f3 c7c5 e1g1 a7a6 e3e4": "Queen's Gambit Accepted: Classical Defense, Russian Gambit", "d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 a7a6 d4c5 f8c5": "Queen's Gambit Accepted: Furman Variation", "d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 a7a6 d1e2": "Queen's Gambit Accepted: Classical Defense, Alekhine System", "d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 a7a6 d1e2 b7b5": "Queen's Gambit Accepted: Classical Defense, Alekhine System", "d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 a7a6 d1e2 b7b5 c4b3 b8c6 f1d1 c5c4 b3c2 c6b4 b1c3 b4c2 e2c2 c8b7 d4d5 d8c7": "Queen's Gambit Accepted: Classical, Flohr Variation", "d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 a7a6 d1e2 b7b5 c4b3 c8b7": "Queen's Gambit Accepted: Classical Defense, Alekhine System, Main Line", "d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 a7a6 d1e2 b7b5 c4b3 c8b7 f1d1 b8d7 b1c3 f8d6": "Queen's Gambit Accepted: Classical Defense, Alekhine System, Smyslov Variation", "d2d4 d7d5 c2c4 e7e6": "Queen's Gambit Declined", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 c1g5 h7h6": "Queen's Gambit Declined: Capablanca Variation", "d2d4 g8f6 g1f3 e7e6 c2c4 d7d5 c1g5 c7c6 b1d2 b8d7 e2e3": "Queen's Gambit Declined: Capablanca Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 e2e3 e7e6 b1d2 b8d7 f1d3 c6c5": "Queen's Gambit Declined: Semmering Variation", "d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 e2e3 c7c6 b1d2 g7g6": "Queen's Gambit Declined: Spielmann Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 e2e3 e7e6 b1d2 f6e4 f1d3 f7f5": "Queen's Gambit Declined: Stonewall Variation", "d2d4 d7d5 c2c4 e7e6 g1f3 c7c5": "Queen's Gambit Declined: Tarrasch Defense, Pseudo-Tarrasch", "d2d4 d7d5 c2c4 e7e6 g1f3 c7c5 c4d5 e6d5 c1g5": "Queen's Gambit Declined: Tarrasch Defense, Pseudo-Tarrasch Bishop Attack", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 c1g5": "Queen's Gambit Declined: Traditional Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 c1g5 f8b4": "Queen's Gambit Declined: Vienna Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 e2e3 e7e6 b1d2": "Semi-Slav Defense: Quiet Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 e2e3 e7e6 b1d2 b8d7": "Semi-Slav Defense: Quiet Variation", "d2d4 e7e6 c2c4 b7b6 b1c3 d7d5": "Queen's Gambit Declined: Alapin Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 f8e7": "Queen's Gambit Declined: Charousek Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 f8e7 e2e4 d5e4 f2f3": "Queen's Gambit Declined: Charousek Variation, Miladinovic Gambit", "d2d4 d7d5 c2c4 e7e6 b1c3 a7a6": "Queen's Gambit Declined: Janowski Variation", "d2d4 d7d5 c2c4 e7e6 b1c3": "Queen's Gambit Declined: Queen's Knight Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 g1f3 d5c4 a2a4 f8b4 e2e3 b7b5 c1d2 a7a5": "Queen's Gambit Declined: Semi-Slav, Abrahams Variation", "d2d4 d7d5 c2c4 e7e6 g1f3 c7c6 b1c3 d5c4 a2a4 f8b4 e2e3 b7b5 c1d2 d8b6": "Queen's Gambit Declined: Semi-Slav, Junge Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 g1f3 d5c4 e2e3 b7b5 a2a4 f8b4 c1d2 d8e7": "Queen's Gambit Declined: Semi-Slav, Koomen Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 f8e7 g1f3 g8f6 c1g5 h7h6 g5h4 e8g8 a1c1 d5c4": "Queen's Gambit Declined: Uhlmann Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c6": "Semi-Slav Defense: Accelerated Move Order", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 e2e3 f7f5 g2g4": "Semi-Slav Defense: Anti-Noteboom, Stonewall Variation, Portisch Gambit", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 e2e4 d5e4 f2f3": "Semi-Slav Defense: Gunderam Gambit", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 e2e4": "Semi-Slav Defense: Marshall Gambit", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 e2e4 d5e4 c3e4 f8b4 e4c3": "Semi-Slav Defense: Marshall Gambit, Forgotten Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 e2e4 d5e4 c3e4 f8b4 c1d2": "Semi-Slav Defense: Marshall Gambit, Main Line", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 e2e4 d5e4 c3e4 f8b4 c1d2 d8d4 d2b4 d4e4 f1e2 c6c5 b4c5 e4g2": "Semi-Slav Defense: Marshall Gambit, Tolush Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 g1f3 d5c4": "Semi-Slav Defense: Noteboom Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 g1f3 d5c4 a2a4 f8b4 e2e3 b4c3 b2c3 b7b5 a4b5 c6b5": "Semi-Slav Defense: Noteboom Variation, Abrahams Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 g1f3 d5c4 g2g3": "Semi-Slav Defense: Noteboom Variation, Anti-Noteboom Gambit", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 g1f3 d5c4 c1g5": "Semi-Slav Defense: Noteboom Variation, Anti-Noteboom Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 g1f3 d5c4 c1g5 f7f6": "Semi-Slav Defense: Noteboom Variation, Anti-Noteboom Variation, Belyavsky Line", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5": "Queen's Gambit Declined: Tarrasch Defense", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5": "Tarrasch Defense", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 d4c5 d5d4 c3a4 b7b5": "Tarrasch Defense: Gr\u00fcnfeld Gambit", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 e2e4": "Tarrasch Defense: Marshall Gambit", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 c5d4": "Tarrasch Defense: Schara Gambit", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 e2e3 g8f6 g1f3 b8c6": "Tarrasch Defense: Symmetrical Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 d4c5 d5d4 c3a4 b7b5": "Tarrasch Defense: Tarrasch Gambit", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3": "Tarrasch Defense: Two Knights Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 c5d4 d1d4 b8c6 d4d1 e6d5 d1d5 c8e6": "Tarrasch Defense: von Hennig Gambit", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 c5d4 f3d4 f8c5": "Tarrasch Defense: Dubov Tarrasch", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6": "Tarrasch Defense: Prague Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3": "Tarrasch Defense: Rubinstein System", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 c5c4": "Tarrasch Defense: Swedish Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 c5c4 e2e4": "Tarrasch Defense: Swedish Variation, Central Break", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 c8g4": "Tarrasch Defense: Wagner Variation", "d2d4 d7d5 c2c4 e7e6 g1f3 c7c5 c4d5 e6d5 g2g3 b8c6 f1g2 g8f6 e1g1 f8e7 b1c3 e8g8 c1g5 c8e6 a1c1 b7b6": "Queen's Gambit Declined: Tarrasch Defense, Stoltz Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 f8e7 e1g1 e8g8": "Tarrasch Defense: Classical Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 f8e7 e1g1 e8g8 c1g5 c5c4": "Tarrasch Defense: Classical Variation, Advance Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 c7c5 g1f3 d7d5 c4d5 e6d5 g2g3 b8c6 f1g2 f8e7 e1g1 e8g8 c1g5 c8e6 a1c1 c5c4": "Tarrasch Defense: Classical Variation, Bogoljubow Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 f8e7 e1g1 e8g8 c1g5": "Tarrasch Defense: Classical Variation, Carlsbad Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 f8e7 e1g1 e8g8 c1g5 c5d4 f3d4 h7h6 g5e3 f8e8 a1c1 c8e6": "Tarrasch Defense: Classical Variation, Chandler Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 f8e7 e1g1 e8g8 d4c5 d5d4": "Tarrasch Defense: Classical Variation, Classical Tarrasch Gambit", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 f8e7 e1g1 e8g8 c1g5 c8e6": "Tarrasch Defense: Classical Variation, Endgame Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 f8e7 e1g1 e8g8 c1g5 c5d4 f3d4 h7h6 g5e3 f8e8": "Tarrasch Defense: Classical Variation, Main Line", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 f8e7 e1g1 e8g8 c1g5 c5d4 f3d4 f8e8": "Tarrasch Defense: Classical Variation, Petursson Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 f8e7 e1g1 e8g8 d4c5 e7c5 c3a4": "Tarrasch Defense: Classical Variation, R\u00e9ti Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 f8e7 e1g1 e8g8 c1g5 c5d4 f3d4 h7h6 g5e3 c8g4": "Tarrasch Defense: Classical Variation, Spassky Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 f8e7": "Tarrasch Defense: Prague Variation, Main Line", "d2d4 g8f6 c2c4 e7e6 b1c3 d7d5 c4d5": "Queen's Gambit Declined: Exchange Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 d7d5 c4d5 e6d5 c1g5 f8e7 e2e3 e8g8 f1d3 b8d7 d1c2 f8e8 g1e2 d7f8 e1c1": "Queen's Gambit Declined: Exchange Variation, Chameleon Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 d7d5 c4d5 e6d5 c1g5": "Queen's Gambit Declined: Exchange Variation, Positional Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 d7d5 c4d5 e6d5 c1g5 c7c6": "Queen's Gambit Declined: Exchange Variation, Positional Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 b8d7 c4d5 e6d5 c1f4": "Queen's Gambit Declined: Exchange Variation, S\u00e4misch Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1f4": "Queen's Gambit Declined: Harrwitz Attack", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6": "Queen's Gambit Declined: Normal Defense", "d2d4 g8f6 c2c4 e7e6 b1c3 d7d5 c4d5 e6d5 c1g5 c7c6 d1c2": "Queen's Gambit Declined: Exchange Variation, Reshevsky Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 b8d7": "Queen's Gambit Declined: Barmen Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8e7 c1f4": "Queen's Gambit Declined: Harrwitz Attack", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8e7 c1f4 e8g8 e2e3 c7c5 d4c5 e7c5 d1c2 b8c6 a1d1 d8a5 a2a3": "Queen's Gambit Declined: Harrwitz Attack", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8e7 c1f4 e8g8 e2e3 c7c5 d4c5 e7c5 d1c2 b8c6 a2a3 d8a5 e1c1": "Queen's Gambit Declined: Harrwitz Attack", "d2d4 d7d5 c2c4 e7e6 b1c3 f8e7 g1f3 g8f6 c1f4 e8g8 e2e3 b7b6": "Queen's Gambit Declined: Harrwitz Attack, Fianchetto Defense", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8e7 c1f4 e8g8 e2e3 c7c5 d4c5 e7c5": "Queen's Gambit Declined: Harrwitz Attack, Main Line", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 f8e7 c1f4 e8g8 e2e3 c7c6": "Queen's Gambit Declined: Harrwitz Attack, Orthodox Defense", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8e7 c1f4 e8g8 e2e3 b8d7": "Queen's Gambit Declined: Harrwitz Attack, Two Knights Defense", "d2d4 g8f6 c2c4 e7e6 b1c3 d7d5 g1f3 f8e7 c1f4 e8g8 e2e3 b8d7 c4c5": "Queen's Gambit Declined: Harrwitz Attack, Two Knights Defense, Blockade Line", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 b8d7 c1g5 h7h6 g5h4 d5c4": "Queen's Gambit Declined: Knight Defense, Alekhine Gambit", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8e7 c1g5 e8g8 d1c2": "Queen's Gambit Declined: Miles Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3": "Queen's Gambit Declined: Three Knights Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 d5c4": "Queen's Gambit Declined: Three Knights, Vienna Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 d5c4 e2e3": "Queen's Gambit Declined: Vienna Variation, Quiet Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8b4": "Queen's Gambit Declined: Ragozin Defense", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8b4 d1a4": "Queen's Gambit Declined: Ragozin Defense, Alekhine Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8b4 c1g5 b8d7 e2e3 c7c5": "Queen's Gambit Declined: Westphalian Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8b4 c1g5 d5c4": "Queen's Gambit Declined: Ragozin Defense, Vienna Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 c7c5": "Queen's Gambit Declined: Semi-Tarrasch Defense", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c5 e2e3 b8c6 f1d3 f8d6 e1g1 e8g8 d1e2 d8e7 d4c5 d6c5 e3e4": "Queen's Gambit Declined: Semi-Tarrasch Defense, Levenfish Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c5 c1g5": "Queen's Gambit Declined: Semi-Tarrasch Defense, Pillsbury Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c5 e2e3 b8c6 f1d3 f8d6 e1g1 e8g8": "Queen's Gambit Declined: Semi-Tarrasch Defense, Symmetrical Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 c7c5 c4d5": "Queen's Gambit Declined: Semi-Tarrasch Defense", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 c7c5 c4d5 f6d5 e2e4": "Queen's Gambit Declined: Semi-Tarrasch Defense, Exchange Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c5 c4d5 f6d5 e2e4 d5c3 b2c3 c5d4 c3d4 f8b4 c1d2 b4d2 d1d2 e8g8 f1b5": "Queen's Gambit Declined: Semi-Tarrasch Defense, Kmoch Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 c7c5 c4d5 f6d5 e2e3": "Queen's Gambit Declined: Semi-Tarrasch Defense, Pillsbury Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c4d5 f6d5 e2e4 d5c3 b2c3 c7c5 g1f3 c5d4 c3d4 f8b4 c1d2 d8a5": "Queen's Gambit Declined: Semi-Tarrasch Defense, San Sebastian Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 c7c5 c4d5 f6d5 e2e3 b8c6 f1d3": "Queen's Gambit Declined: Semi-Tarrasch Defense, Main Line", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 e7e6 c1g5 h7h6 g5f6 d8f6 d1b3": "Queen's Gambit Declined: Hastings Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 e7e6": "Semi-Slav Defense", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 e7e6 c1g5 h7h6 g5h4": "Semi-Slav Defense: Anti-Moscow Gambit", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 e7e6 c1g5 d5c4": "Semi-Slav Defense Accepted", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 e7e6 c1g5 d5c4 e2e4": "Semi-Slav Defense: Botvinnik Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 e7e6 c1g5 d5c4 e2e4 b7b5 e4e5 h7h6 g5h4 g7g5 f3g5": "Semi-Slav Defense: Botvinnik Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 c7c6 c1g5 d5c4 e2e4 b7b5 e4e5 h7h6 g5h4 g7g5 f3g5 f6d5": "Semi-Slav Defense: Botvinnik Variation, Alatortsev System", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 e7e6 c1g5 d5c4 e2e4 b7b5 e4e5 h7h6 g5h4 g7g5 e5f6 g5h4 f3e5": "Semi-Slav Defense: Botvinnik Variation, Ekstrom Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 e7e6 c1g5 d5c4 e2e4 b7b5 e4e5 h7h6 g5h4 g7g5 f3g5 h6g5 h4g5 b8d7 g2g3": "Semi-Slav Defense: Botvinnik Variation, Lilienthal Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 c7c6 c1g5 d5c4 e2e4 b7b5 e4e5 h7h6 g5h4 g7g5 f3g5 h6g5 h4g5 b8d7 d1f3": "Semi-Slav Defense: Botvinnik Variation, Szabo Variation", "d2d4 d7d5 c2c4 c7c6 b1c3 g8f6 e2e3 e7e6 g1f3 a7a6": "Semi-Slav Defense: Accelerated Meran Variation", "d2d4 d7d5 c2c4 c7c6 b1c3 g8f6 e2e3 e7e6 g1f3": "Semi-Slav Defense: Main Line", "d2d4 d7d5 c2c4 c7c6 b1c3 g8f6 e2e3 e7e6 g1f3 b8d7": "Semi-Slav Defense: Normal Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 g1f3 g8f6 e2e3 b8d7 f3e5": "Semi-Slav Defense: Rubinstein System", "d2d4 d7d5 c2c4 c7c6 b1c3 g8f6 e2e3 e7e6 g1f3 b8d7 d1c2": "Semi-Slav Defense: Stoltz Variation", "d2d4 d7d5 g1f3 g8f6 c2c4 c7c6 e2e3 e7e6 b1c3 b8d7 d1c2 f8d6 b2b3": "Semi-Slav Defense: Stoltz Variation", "d2d4 d7d5 g1f3 g8f6 c2c4 c7c6 e2e3 e7e6 b1c3 b8d7 d1c2 f8d6 b2b3 e8g8 c1b2": "Semi-Slav Defense: Stoltz Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 e7e6 e2e3 b8d7 d1c2 f8d6 e3e4": "Semi-Slav Defense: Stoltz Variation, Center Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 e7e6 e2e3 b8d7 d1c2 f8d6 e3e4 d5e4 c3e4 f6e4 c2e4 e6e5 d4e5": "Semi-Slav Defense: Stoltz Variation, Center Variation, Mikhalchishin Line", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 e7e6 e2e3 b8d7 d1c2 f8d6 g2g4": "Semi-Slav Defense: Stoltz Variation, Shabalov Attack", "d2d4 d7d5 g1f3 g8f6 c2c4 c7c6 b1c3 e7e6 e2e3 f6e4 f1d3 f7f5": "Semi-Slav Defense: Stonewall Defense", "d2d4 d7d5 c2c4 c7c6 b1c3 g8f6 e2e3 e7e6 g1f3 b8d7 f1d3 f8e7": "Semi-Slav Defense: Bogoljubow Variation", "d2d4 d7d5 c2c4 c7c6 b1c3 g8f6 e2e3 e7e6 g1f3 b8d7 f1d3 f8d6": "Semi-Slav Defense: Chigorin Defense", "d2d4 d7d5 c2c4 c7c6 b1c3 g8f6 e2e3 e7e6 g1f3 b8d7 f1d3 f8d6 d1c2": "Semi-Slav Defense: Chigorin Defense", "d2d4 d7d5 c2c4 c7c6 b1c3 g8f6 e2e3 e7e6 g1f3 b8d7 f1d3": "Semi-Slav Defense: Main Line", "d2d4 d7d5 c2c4 c7c6 b1c3 g8f6 e2e3 e7e6 g1f3 b8d7 f1d3 f8b4": "Semi-Slav Defense: Romih Variation", "d2d4 d7d5 c2c4 c7c6 b1c3 g8f6 e2e3 e7e6 g1f3 b8d7 f1d3 d5c4 d3c4 b7b5": "Semi-Slav Defense: Meran Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 e7e6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 b5b4": "Semi-Slav Defense: Meran Variation, Lundin Variation", "d2d4 d7d5 c2c4 c7c6 b1c3 g8f6 e2e3 e7e6 g1f3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 c8b7": "Semi-Slav Defense: Meran Variation, Wade Variation", "d2d4 d7d5 c2c4 c7c6 b1c3 g8f6 e2e3 e7e6 g1f3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 c8b7 e3e4 b5b4 c3a4 c6c5 e4e5 f6d5 e1g1 c5d4 f3d4": "Semi-Slav Defense: Meran Variation, Wade Variation, Kaidanov Gambit", "d2d4 d7d5 c2c4 c7c6 b1c3 g8f6 e2e3 e7e6 g1f3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 c8b7 e3e4 b5b4 c3a4 c6c5 e4e5 f6d5": "Semi-Slav Defense: Meran Variation, Wade Variation, Larsen Variation", "d2d4 d7d5 c2c4 c7c6 b1c3 g8f6 e2e3 e7e6 g1f3 b8d7 f1d3 d5c4 d3c4": "Semi-Slav Defense: Semi-Meran Variation", "d2d4 d7d5 c2c4 c7c6 b1c3 g8f6 e2e3 e7e6 g1f3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6": "Semi-Slav Defense: Meran Variation", "d2d4 d7d5 c2c4 c7c6 b1c3 g8f6 e2e3 e7e6 g1f3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5": "Semi-Slav Defense: Meran Variation", "d2d4 d7d5 c2c4 c7c6 b1c3 g8f6 e2e3 e7e6 g1f3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 e4e5": "Semi-Slav Defense: Meran Variation, Old Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 e2e3 g8f6 g1f3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 b5b4": "Semi-Slav Defense: Meran Variation, Pirc Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 e7e6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 d4d5": "Semi-Slav Defense: Meran Variation, Reynolds' Variation", "d2d4 d7d5 c2c4 c7c6 b1c3 g8f6 e2e3 e7e6 g1f3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 e4e5 c5d4 c3b5": "Semi-Slav Defense: Meran Variation, Blumenfeld Variation", "d2d4 d7d5 c2c4 c7c6 b1c3 g8f6 e2e3 e7e6 g1f3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 e4e5 c5d4 c3b5 f6g4": "Semi-Slav Defense: Meran Variation, Rabinovich Variation", "d2d4 d7d5 c2c4 c7c6 b1c3 g8f6 g1f3 e7e6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 e4e5 c5d4 c3b5 d7e5 f3e5 a6b5 e1g1 d8d5 d1e2 c8a6 c1g5": "Semi-Slav Defense: Meran Variation, Rellstab Attack", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 e7e6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 e4e5 c5d4 c3b5 d7e5": "Semi-Slav Defense: Meran Variation, Sozin Variation", "d2d4 d7d5 g1f3 g8f6 c2c4 c7c6 b1c3 e7e6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 e4e5 c5d4 c3b5 d7e5 f3e5 a6b5 e1g1": "Semi-Slav Defense: Meran Variation, Sozin Variation", "d2d4 d7d5 c2c4 c7c6 b1c3 g8f6 e2e3 e7e6 g1f3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 e4e5 c5d4 c3b5 d7e5 f3e5 a6b5 d1f3": "Semi-Slav Defense: Meran Variation, Stahlberg Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 c7c5": "Queen's Gambit Declined: Been-Koomen Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5": "Queen's Gambit Declined: Modern Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 c7c5 c4d5": "Queen's Gambit Declined: Pseudo-Tarrasch Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 c7c5 c4d5 d8b6": "Queen's Gambit Declined: Pseudo-Tarrasch Variation, Canal Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 c7c5 g1f3 c5d4 d1d4": "Queen's Gambit Declined: Pseudo-Tarrasch Variation, Primitive Pillsbury Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 c7c5 g1f3 c5d4 f3d4 e6e5 d4b5 a7a6 d1a4": "Queen's Gambit Declined: Semi-Tarrasch Defense, Krause Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 g1f3 c7c6 e2e4": "Queen's Gambit Declined: Alekhine Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 c7c6 a2a3": "Queen's Gambit Declined: Capablanca Variation, Anti-Cambridge Springs Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 f8b4": "Queen's Gambit Declined: Manhattan Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7": "Queen's Gambit Declined: Modern Variation, Knight Defense", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3": "Queen's Gambit Declined: Modern Variation, Knight Defense", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 c7c6": "Queen's Gambit Declined: Modern Variation, Knight Defense", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 g1f3 c7c6 a1c1 d8a5 g5d2": "Queen's Gambit Declined: Rochlin Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 e7e6 c1g5 b8d7 e2e3": "Queen's Gambit Declined", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 e7e6 c1g5 b8d7 e2e3 d8a5": "Queen's Gambit Declined: Cambridge Springs Defense", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 e7e6 c1g5 b8d7 e2e3 d8a5 c4d5": "Queen's Gambit Declined: Cambridge Springs Defense", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 c7c6 g1f3 d8a5 f3d2 f8b4 d1c2 e8g8 g5h4": "Queen's Gambit Declined: Cambridge Springs Defense, Argentine Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 e7e6 c1g5 b8d7 e2e3 d8a5 f3d2 f8b4 d1c2": "Queen's Gambit Declined: Cambridge Springs Defense, Bogoljubow Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 c7c6 g1f3 d8a5 g5f6": "Queen's Gambit Declined: Cambridge Springs Defense, Capablanca Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 e7e6 c1g5 b8d7 e2e3 d8a5 f3d2 d5c4": "Queen's Gambit Declined: Cambridge Springs Defense, Rubinstein Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 e7e6 c1g5 b8d7 e2e3 d8a5 c4d5 f6d5": "Queen's Gambit Declined: Cambridge Springs Defense, Yugoslav Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7": "Queen's Gambit Declined", "d2d4 g8f6 c2c4 e7e6 b1c3 d7d5 c1g5 f8e7 e2e3 f6e4": "Queen's Gambit Declined: Lasker Defense", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 g5f6": "Queen's Gambit Declined: Modern Variation, Heral Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 d7d5 c1g5 f8e7 e2e3 e8g8 a1c1": "Queen's Gambit Declined: Neo-Orthodox Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8e7 c1g5 e8g8 e2e3 h7h6 g5f6": "Queen's Gambit Declined: Anti-Tartakower Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8e7 c1g5 h7h6 g5f6 e7f6 e2e3 e8g8 a1c1 c7c6 f1d3 b8d7 e1g1 d5c4 d3c4": "Queen's Gambit Declined: Anti-Tartakower Variation, Petrosian Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8e7 c1g5 e8g8 e2e3": "Queen's Gambit Declined: Modern Variation, Normal Line", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8e7 c1g5 e8g8 e2e3 h7h6": "Queen's Gambit Declined: Neo-Orthodox Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8e7 c1g5 h7h6 g5h4 e8g8 e2e3": "Queen's Gambit Declined: Neo-Orthodox Variation, Main Line", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 b1c3 d7d5 c4d5 e6d5 c1g5 f8e7 e2e3 e8g8 f1d3 c8b7 f3e5": "Queen's Gambit Declined: Pillsbury Attack", "d2d4 d7d5 c2c4 e7e6 b1c3 f8e7 g1f3 g8f6 c1g5 h7h6 g5h4 e8g8 e2e3 f6e4": "Queen's Gambit Declined: Lasker Defense", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 g5h4 f6e4 h4e7 d8e7 d1c2 e4f6 f1d3 d5c4 d3c4 c7c5 e1g1 b8c6 f1d1 c8d7": "Queen's Gambit Declined: Lasker Defense, Russian Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8e7 c1g5 h7h6 g5h4 e8g8 e2e3 f6e4 h4e7 d8e7 d1c2": "Queen's Gambit Declined: Lasker Defense, Teichmann Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 d7d5 c1g5 f8e7 e2e3 h7h6 g5h4 e8g8 g1f3 f6e4 h4e7 d8e7 c4d5 e4c3 b2c3 e6d5 d1b3 e7d6": "Queen's Gambit Declined: Lasker Defense, Bernstein Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 g5h4 f6e4 h4e7 d8e7 c4d5 e4c3 b2c3 e6d5 d1b3 f8d8 c3c4 c8e6": "Queen's Gambit Declined: Lasker Defense, Bernstein Variation, Mar del Plata Gambit", "d2d4 d7d5 c2c4 e7e6 b1c3 f8e7 g1f3 g8f6 c1g5 h7h6 g5h4 e8g8 e2e3 f6e4 h4e7 d8e7 c4d5 e4c3 b2c3": "Queen's Gambit Declined: Lasker Defense, Main Line", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8e7 c1g5 h7h6 g5h4 e8g8 e2e3 b7b6": "Queen's Gambit Declined: Tartakower Defense", "d2d4 d7d5 c2c4 e7e6 b1c3 f8e7 g1f3 g8f6 c1g5 h7h6 g5h4 e8g8 e2e3 b7b6 c4d5 e6d5": "Queen's Gambit Declined: Tartakower Defense, Exchange Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 f8e7 g1f3 g8f6 c1g5 h7h6 g5h4 e8g8 e2e3 b7b6 c4d5 f6d5 h4e7 d8e7 c3d5 e6d5 a1c1 c8e6": "Queen's Gambit Declined: Tartakower Defense", "d2d4 d7d5 c2c4 e7e6 b1c3 f8e7 g1f3 g8f6 c1g5 h7h6 g5h4 e8g8 e2e3 b7b6 c4d5 f6d5": "Queen's Gambit Declined: Tartakower Defense, Makogonov Exchange Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8e7 c1g5 e8g8 e2e3 b8d7": "Queen's Gambit Declined: Orthodox Defense", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8e7 c1g5 e8g8 e2e3 b8d7 f1d3": "Queen's Gambit Declined: Orthodox Defense, Botvinnik Variation", "d2d4 d7d5 g1f3 g8f6 c2c4 e7e6 b1c3 f8e7 c1g5 e8g8 e2e3 b8d7 d1b3": "Queen's Gambit Declined: Orthodox Defense, Rauzer Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8e7 c1g5 e8g8 e2e3 b8d7 d1c2": "Queen's Gambit Declined: Orthodox Defense, Rubinstein Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8e7 c1g5 e8g8 e2e3 b8d7 d1c2 c7c5 c4d5": "Queen's Gambit Declined: Orthodox Defense, Rubinstein Variation, Flohr Line", "g1f3 d7d5 d2d4 g8f6 c2c4 e7e6 b1c3 f8e7 c1g5 e8g8 e2e3 b8d7 a1c1 b7b6 c4d5 e6d5 f1b5": "Queen's Gambit Declined: Orthodox Defense, Capablanca Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8e7 c1g5 e8g8 e2e3 b8d7 a1c1 a7a6": "Queen's Gambit Declined: Orthodox Defense, Henneberger Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8e7 c1g5 e8g8 e2e3 b8d7 a1c1": "Queen's Gambit Declined: Orthodox Defense, Main Line", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8e7 c1g5 e8g8 e2e3 b8d7 a1c1 c7c6": "Queen's Gambit Declined: Orthodox Defense, Main Line", "d2d4 g8f6 c2c4 e7e6 b1c3 d7d5 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 b7b6 c4d5 e6d5 f1d3": "Queen's Gambit Declined: Orthodox Defense, Pillsbury Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8e7 c1g5 e8g8 e2e3 b8d7 a1c1 a7a6 c4d5": "Queen's Gambit Declined: Orthodox Defense, Swiss, Karlsbad Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 d7d5 g1f3 f8e7 c1g5 e8g8 e2e3 b8d7 a1c1 c7c6 a2a3 a7a6 d1c2": "Queen's Gambit Declined: Orthodox Defense, Rubinstein Attack", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8e7 c1g5 e8g8 e2e3 b8d7 a1c1 c7c6 d1c2": "Queen's Gambit Declined: Orthodox Defense, Rubinstein Attack", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8e7 c1g5 e8g8 e2e3 b8d7 a1c1 c7c6 d1c2 a7a6": "Queen's Gambit Declined: Orthodox Defense, Rubinstein Attack", "g1f3 d7d5 d2d4 g8f6 c2c4 e7e6 b1c3 f8e7 c1g5 e8g8 e2e3 b8d7 a1c1 c7c6 d1c2 f6e4": "Queen's Gambit Declined: Orthodox Defense, Rubinstein Attack", "d2d4 d7d5 g1f3 g8f6 c2c4 e7e6 b1c3 f8e7 c1g5 e8g8 e2e3 b8d7 a1c1 c7c6 d1c2 a7a6 c4d5": "Queen's Gambit Declined: Orthodox Defense, Rubinstein Attack", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3": "Queen's Gambit Declined: Orthodox Defense, Bd3 Line", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 c7c6 g1f3 f8e7 e2e3 b8d7 a1c1 e8g8 f1d3 d5c4 d3c4 b7b5": "Queen's Gambit Declined: Orthodox Defense, Fianchetto Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 g5e7 d8e7 c3e4": "Queen's Gambit Declined: Orthodox Defense, Alekhine Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 g5e7 d8e7": "Queen's Gambit Declined: Orthodox Defense, Bd3 Line", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5": "Queen's Gambit Declined: Orthodox Defense, Capablanca System", "d2d4 d7d5 g1f3 g8f6 c2c4 e7e6 b1c3 f8e7 c1g5 e8g8 e2e3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 h2h4": "Queen's Gambit Declined: Orthodox Defense, Janowski Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 g5e7 d8e7 e1g1": "Queen's Gambit Declined: Orthodox Defense, Main Line", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 g5e7 d8e7 e1g1 d5c3 c1c3 e6e5": "Queen's Gambit Declined: Orthodox Defense, Classical Variation", "d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 b1c3 f8e7 c1g5 e8g8 e2e3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 g5e7 d8e7 e1g1 d5c3 c1c3 e6e5 d1b1": "Queen's Gambit Declined: Orthodox Defense, Classical Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 b1c3 f8e7 c1g5 e8g8 e2e3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 g5e7 d8e7 e1g1 d5c3 c1c3 e6e5 d1c2": "Queen's Gambit Declined: Orthodox Defense, Classical Variation", "d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 g5e7 d8e7 e1g1 d5c3 c1c3 e6e5 d4e5 d7e5 f3e5 e7e5": "Queen's Gambit Declined: Orthodox Defense, Classical Variation", "d2d4 g8f6 c2c4 g7g6 f2f3 d7d5": "Neo-Gr\u00fcnfeld Defense: Goglidze Attack", "d2d4 g8f6 c2c4 g7g6 g1f3 d7d5": "Neo-Gr\u00fcnfeld Defense: with Nf3", "d2d4 g8f6 c2c4 g7g6 g2g3 d7d5": "Neo-Gr\u00fcnfeld Defense: with g3", "d2d4 g8f6 c2c4 g7g6 g2g3 f8g7 f1g2 d7d5 c4d5 f6d5": "Neo-Gr\u00fcnfeld Defense: Exchange Variation", "d2d4 g8f6 c2c4 g7g6 g1f3 f8g7 g2g3 e8g8 f1g2 d7d5 c4d5 f6d5 e1g1": "Neo-Gr\u00fcnfeld Defense: Delayed Exchange Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 e8g8 g2g3 d7d5 c4d5 f6d5 f1g2 c7c5 e1g1": "Neo-Gr\u00fcnfeld Defense: Delayed Exchange Variation", "d2d4 g8f6 g1f3 g7g6 c2c4 f8g7 g2g3 e8g8 f1g2 d7d5 c4d5 f6d5 e1g1 c7c5 d4c5": "Neo-Gr\u00fcnfeld Defense: Delayed Exchange Variation", "d2d4 g8f6 c2c4 g7g6 g1f3 f8g7 g2g3 e8g8 f1g2 d7d5 c4d5 f6d5 e1g1 d5b6": "Neo-Gr\u00fcnfeld Defense: Delayed Exchange Variation", "d2d4 g8f6 g1f3 g7g6 g2g3 f8g7 f1g2 e8g8 e1g1 d7d5 c2c4": "Neo-Gr\u00fcnfeld Defense: Classical Variation", "d2d4 g8f6 g1f3 g7g6 g2g3 f8g7 f1g2 e8g8 e1g1 d7d5 c2c4 d5c4": "Neo-Gr\u00fcnfeld Defense: Classical Variation, Modern Defense", "d2d4 g8f6 g1f3 g7g6 g2g3 f8g7 f1g2 e8g8 e1g1 d7d5 c2c4 b8c6": "Neo-Gr\u00fcnfeld Defense: Classical Variation, Polgar Variation", "d2d4 g8f6 c2c4 g7g6 g1f3 f8g7 g2g3 e8g8 f1g2 c7c6 e1g1 d7d5": "Neo-Gr\u00fcnfeld Defense: Classical Variation, Original Defense", "d2d4 g8f6 c2c4 g7g6 g1f3 f8g7 g2g3 e8g8 f1g2 c7c6 e1g1 d7d5 c4d5 c6d5": "Neo-Gr\u00fcnfeld Defense: Ultra-Delayed Exchange Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5": "Gr\u00fcnfeld Defense", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g2g4": "Gr\u00fcnfeld Defense: Gibbon Gambit", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c1g5 f6e4 c3e4 d5e4 d1d2 c7c5": "Gr\u00fcnfeld Defense: Lundin Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 f2f3": "Gr\u00fcnfeld Defense: Lutikov Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 f2f3 c7c5 c4d5 f6d5 c3a4": "Gr\u00fcnfeld Defense: Lutikov Variation, Murrey Attack", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c1g5": "Gr\u00fcnfeld Defense: Stockholm Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 h2h4": "Gr\u00fcnfeld Defense: Zaitsev Gambit", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 d1b3": "Gr\u00fcnfeld Defense: Russian Variation, Accelerated Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c1f4": "Gr\u00fcnfeld Defense: Brinckmann Attack", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c1f4 f8g7 e2e3 e8g8": "Gr\u00fcnfeld Defense: Brinckmann Attack, Gr\u00fcnfeld Gambit", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c1f4 f8g7 e2e3 e8g8 a1c1 c7c5 d4c5 c8e6": "Gr\u00fcnfeld Defense: Brinckmann Attack, Gr\u00fcnfeld Gambit, Botvinnik Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c1f4 f8g7 e2e3 e8g8 a1c1": "Gr\u00fcnfeld Defense: Brinckmann Attack, Gr\u00fcnfeld Gambit, Capablanca Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c1f4 f8g7 a1c1 e8g8 e2e3 c7c5 d4c5 d8a5": "Gr\u00fcnfeld Defense: Brinckmann Attack, Reshevsky Gambit", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c1f4 f8g7 e2e3 e8g8 c4d5 f6d5 c3d5 d8d5 f4c7": "Gr\u00fcnfeld Defense: Brinckmann Attack, Gr\u00fcnfeld Gambit Accepted", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5": "Gr\u00fcnfeld Defense: Exchange Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 g1f3": "Gr\u00fcnfeld Defense: Exchange Variation, Modern Exchange Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 g1f3 c7c5": "Gr\u00fcnfeld Defense: Exchange Variation, Modern Exchange Variation", "d2d4 g8f6 g1f3 g7g6 c2c4 f8g7 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 c7c5 a1b1": "Gr\u00fcnfeld Defense: Exchange Variation, Modern Exchange Variation", "d2d4 g8f6 g1f3 g7g6 c2c4 f8g7 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 c7c5 h2h3": "Gr\u00fcnfeld Defense: Exchange Variation, Modern Exchange Variation, Kramnik's Line", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 g1f3 c7c5 a1b1 e8g8 f1e2 b8c6 d4d5 g7c3": "Gr\u00fcnfeld Defense: Exchange Variation, Modern Exchange Variation, Pawn Grab Line", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 c3a4": "Gr\u00fcnfeld Defense: Exchange Variation, Nadanian Attack", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4": "Gr\u00fcnfeld Defense: Exchange Variation, Classical Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 e8g8 g1e2 d8d7": "Gr\u00fcnfeld Defense: Exchange Variation, Larsen Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 e8g8 g1e2 d8d7 e1g1 b7b6": "Gr\u00fcnfeld Defense: Exchange Variation, Larsen Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 e8g8 g1e2 b8c6": "Gr\u00fcnfeld Defense: Exchange Variation, Simagin's Improved Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 e8g8 g1e2 b7b6": "Gr\u00fcnfeld Defense: Exchange Variation, Simagin's Lesser Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 c7c5 g1e2 b8c6 c1e3 e8g8 e1g1 c8g4 f2f3 c6a5 c4f7": "Gr\u00fcnfeld Defense: Exchange Variation, Seville Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 c7c5 g1e2 e8g8": "Gr\u00fcnfeld Defense: Exchange Variation, Spassky Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 c7c5 g1e2 b8c6 c1e3 e8g8 e1g1 c5d4 c3d4": "Gr\u00fcnfeld Defense: Exchange Variation, Spassky Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 c7c5 g1e2 e8g8 e1g1 b8c6 c1e3 c8g4 f2f3 c6a5 c4d3 c5d4 c3d4 g4e6 d4d5": "Gr\u00fcnfeld Defense: Exchange Variation, Sokolsky Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 c7c5 g1e2 b8c6 c1e3 e8g8 e1g1 c8g4 f2f3 c6a5 c4d3 c5d4 c3d4 g4e6": "Gr\u00fcnfeld Defense: Exchange Variation, Spassky Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1a4": "Gr\u00fcnfeld Defense: Flohr Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3": "Gr\u00fcnfeld Defense: Three Knights Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7": "Gr\u00fcnfeld Defense: Three Knights Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 c1g5": "Gr\u00fcnfeld Defense: Three Knights Variation, Petrosian System", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 c1f4": "Gr\u00fcnfeld Defense: Three Knights Variation, Hungarian Attack", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 c1f4 e8g8 e2e3": "Gr\u00fcnfeld Defense: Three Knights Variation, Hungarian Variation", "d2d4 d7d5 c2c4 c7c6 b1c3 g8f6 e2e3 g7g6 g1f3 f8g7 f1d3 e8g8 e1g1 c8f5": "Gr\u00fcnfeld Defense: Flohr Defense", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 e2e3 e8g8 b2b4": "Gr\u00fcnfeld Defense: Makogonov Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 e2e3 e8g8 c1d2": "Gr\u00fcnfeld Defense: Opocensky Variation", "d2d4 d7d5 c2c4 c7c6 b1c3 g8f6 e2e3 g7g6 g1f3 f8g7 f1d3 e8g8 e1g1 c8g4": "Gr\u00fcnfeld Defense: Smyslov Defense", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 e2e3": "Gr\u00fcnfeld Defense: Three Knights Variation, Burille Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 e2e3 e8g8 f1d3": "Gr\u00fcnfeld Defense: Three Knights Variation, Paris Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 e2e3 e8g8 d1b3 e7e6": "Gr\u00fcnfeld Defense: Botvinnik Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 e2e3 f8g7 d1b3 d5c4 f1c4 e8g8 g1f3 b8d7 f3g5": "Gr\u00fcnfeld Defense: Pachman Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 e2e3 e8g8 d1b3": "Gr\u00fcnfeld Defense: Three Knights Variation, Vienna Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3": "Gr\u00fcnfeld Defense: Russian Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4": "Gr\u00fcnfeld Defense: Russian Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 b8c6": "Gr\u00fcnfeld Defense: Russian Variation, Byrne Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 a7a6": "Gr\u00fcnfeld Defense: Russian Variation, Hungarian Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 b7b6": "Gr\u00fcnfeld Defense: Russian Variation, Levenfish Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 b8a6": "Gr\u00fcnfeld Defense: Russian Variation, Prins Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 c7c6": "Gr\u00fcnfeld Defense: Russian Variation, Szabo Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 c8g4 c1e3 f6d7 f1e2 d7b6 c4d3 b8c6 e1c1": "Gr\u00fcnfeld Defense: Russian Variation, Keres Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 c8g4": "Gr\u00fcnfeld Defense: Russian Variation, Smyslov Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 c8g4 c1e3 f6d7 c4b3": "Gr\u00fcnfeld Defense: Russian Variation, Smyslov Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 c8g4 c1e3 f6d7 c4b3 c7c5": "Gr\u00fcnfeld Defense: Russian Variation, Yugoslav Variation", "d2d4 g8f6 c2c4 e7e6 g2g3": "Catalan Opening", "d2d4 g8f6 c2c4 e7e6 g2g3 d7d5": "Catalan Opening", "d2d4 g8f6 c2c4 e7e6 g2g3 e6e5": "Catalan Opening: Hungarian Gambit", "d2d4 g8f6 c2c4 e7e6 d1b3": "Indian Defense", "d2d4 g8f6 c2c4 e7e6 g2g4": "Indian Defense: Devin Gambit", "d2d4 g8f6 c2c4 e7e6 c1g5": "Indian Defense: Seirawan Attack", "d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2": "Catalan Opening: Closed", "d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 d5c4": "Catalan Opening: Open Defense", "d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 d5c4 d1a4 b8d7 a4c4": "Catalan Opening: Open Defense", "d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 d5c4 d1a4 b8d7 a4c4 a7a6 c4c2": "Catalan Opening: Open Defense, Alekhine Variation", "d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 d5c4 g1f3": "Catalan Opening: Open Defense", "d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 d5c4 g1f3 b8c6 d1a4 f8b4": "Catalan Opening: Open Defense, Modern Sharp Variation", "d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 d5c4 g1f3 f8e7": "Catalan Opening: Open Defense, Classical Line", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 g2g3 f8e7 f1g2 e8g8 e1g1 d5c4": "Catalan Opening: Open Defense, Classical Line", "d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 f8e7 g1f3": "Catalan Opening: Closed", "d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 f8e7 g1f3 e8g8 e1g1 b8d7": "Catalan Opening: Closed", "d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 f8e7 g1f3 e8g8 e1g1 b8d7 b1c3 c7c6 d1d3": "Catalan Opening: Closed, Botvinnik Variation", "d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 f8e7 g1f3 e8g8 e1g1 b8d7 d1c2 c7c6 b2b3": "Catalan Opening: Closed", "d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 f8e7 g1f3 e8g8 e1g1 b8d7 d1c2": "Catalan Opening: Closed", "d2d4 g8f6 c2c4 e7e6 g2g3 f8e7 f1g2 d7d5 g1f3 e8g8 e1g1 b8d7 d1c2 c7c6 b2b3 b7b6 f1d1 c8b7 b1c3 b6b5": "Catalan Opening: Closed, Spassky Gambit", "d2d4 e7e6 c2c4 g8f6 g1f3 d7d5 g2g3 f8e7 f1g2 e8g8 e1g1 b8d7 d1c2 c7c6 f1d1 b7b6 a2a4": "Catalan Opening: Closed, Zagoryansky Variation", "d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 d1c2 e7e6 b1d2 f8e7 g2g3 b8d7 f1g2 e8g8 e1g1 b7b5": "Catalan Opening: Closed Variation, Rabinovich Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 g2g3 f8e7 f1g2 e8g8 e1g1 b8d7 d1c2 c7c6 b1d2 b7b6": "Catalan Opening: Closed Variation, Traditional Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 d7d5 g2g3 f8e7 f1g2 e8g8 e1g1 b8d7 d1c2 c7c6 b1d2": "Catalan Opening: Closed, Main Line", "d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 f8e7 g1f3 e8g8 e1g1 b8d7 d1c2 c7c6 b1d2 b7b6 b2b3 a7a5 c1b2 c8a6": "Catalan Opening: Closed, Sokolsky Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 c7c5 d4d5 b7b5": "Blumenfeld Countergambit", "d2d4 g8f6 c2c4 e7e6 g1f3 c7c5 d4d5 b7b5 d5e6 f7e6 c4b5 d7d5": "Blumenfeld Countergambit Accepted", "d2d4 g8f6 c2c4 e7e6 g1f3 c7c5 d4d5 b7b5 c1g5": "Blumenfeld Countergambit: Duz-Khotimirsky Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 c7c5 d4d5 b7b5 c1g5 e6d5 c4d5 h7h6": "Blumenfeld Countergambit: Spielmann Variation", "d2d4 g8f6 c2c4 e7e6 g1f3": "Indian Defense: Anti-Nimzo-Indian", "d2d4 g8f6 c2c4 e7e6 g1f3 a7a6": "Indian Defense: Dzindzi-Indian Defense", "d2d4 g8f6 c2c4 e7e6 g1f3 f6e4": "Indian Defense: D\u00f6ry Indian", "d2d4 g8f6 c2c4 e7e6 g1f3 f8b4": "Bogo-Indian Defense", "d2d4 g8f6 c2c4 e7e6 g1f3 f8b4 c1d2 b4d2": "Bogo-Indian Defense: Exchange Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 f8b4 b1d2": "Bogo-Indian Defense: Gr\u00fcnfeld Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 f8b4 c1d2 b8c6": "Bogo-Indian Defense: Haiti Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8b4 c1d2 b4d2 d1d2 e8g8 b1c3 f6e4 d2c2 e4c3 f3g5": "Bogo-Indian Defense: Monticelli Trap", "d2d4 g8f6 c2c4 e7e6 g1f3 f8b4 f3d2": "Bogo-Indian Defense: New England Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 f8b4 c1d2 d8e7": "Bogo-Indian Defense: Nimzowitsch Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 f8b4 c1d2 b4e7": "Bogo-Indian Defense: Retreat Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 f8b4 c1d2 c7c5": "Bogo-Indian Defense: Vitolins Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 f8b4 c1d2 a7a5": "Bogo-Indian Defense: Wade-Smyslov Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 b1c3 f8b4": "Nimzo-Indian Defense: Three Knights Variation, Duchamp Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 b1c3 f8b4 c1g5 c8b7 f3d2": "Nimzo-Indian Defense: Three Knights Variation, Duchamp Variation, Modern Line", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6": "Queen's Indian Defense", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 b1c3": "Queen's Indian Defense: Kasparov Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 b1c3 c8b7 c1g5 h7h6 g5h4 g7g5 h4g3 f6h5": "Queen's Indian Defense: Kasparov Variation, Botvinnik Attack", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 a2a3 c8b7 b1c3": "Queen's Indian Defense: Kasparov-Petrosian Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 a2a3 c8b7 b1c3 f6e4": "Queen's Indian Defense: Kasparov-Petrosian Variation, Andersson Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 a2a3 c8b7 b1c3 d7d5 c4d5 e6d5": "Queen's Indian Defense: Kasparov-Petrosian Variation, Classical Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 a2a3 c8b7 b1c3 g7g6": "Queen's Indian Defense: Kasparov-Petrosian Variation, Hedgehog Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 a2a3 c8b7 b1c3 d7d5 c4d5 f6d5 d1c2": "Queen's Indian Defense: Kasparov-Petrosian Variation, Kasparov Attack", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 a2a3 c8b7 b1c3 d7d5": "Queen's Indian Defense: Kasparov-Petrosian Variation, Main Line", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 a2a3 c8b7 b1c3 f8e7": "Queen's Indian Defense: Kasparov-Petrosian Variation, Marco Defense", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 a2a3 c8b7 b1c3 d7d5 c4d5 f6d5": "Queen's Indian Defense: Kasparov-Petrosian Variation, Modern Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 a2a3 c8b7 b1c3 d7d5 c4d5 f6d5 e2e3": "Queen's Indian Defense: Kasparov-Petrosian Variation, Petrosian Attack", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 b1c3 c8b7 a2a3 d7d5 c4d5 f6d5 e2e4": "Queen's Indian Defense: Kasparov-Petrosian Variation, Polovodin Gambit", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 a2a3 c8b7 b1c3 d7d5 c4d5 f6d5 d1a4": "Queen's Indian Defense: Kasparov-Petrosian Variation, Rashkovsky Attack", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 a2a3 c8b7 b1c3 d7d5 c4d5 f6d5 c1d2": "Queen's Indian Defense: Kasparov-Petrosian Variation, Romanishin Attack", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 c1f4": "Queen's Indian Defense: Miles Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 a2a3": "Queen's Indian Defense: Petrosian Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 a2a3 c8a6 d1c2 a6b7": "Queen's Indian Defense: Petrosian Variation, Farago Defense", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 b1c3 f8b4 c1g5 h7h6 g5h4 c8b7": "Queen's Indian Defense: Kasparov Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 e2e3 c8b7 f1d3 c7c5 e1g1 f8e7 b2b3 e8g8 c1b2 c5d4 f3d4": "Queen's Indian Defense: Averbakh Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 e2e3": "Queen's Indian Defense: Spassky System", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 c7c5 d4d5 e6d5 f3g5": "Queen's Indian Defense: Buerger Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3": "Queen's Indian Defense: Fianchetto Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8a6 b2b3 f8b4": "Queen's Indian Defense: Fianchetto Variation, Check Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8a6 b2b3 f8b4 c1d2 b4e7": "Queen's Indian Defense: Fianchetto Variation, Check Variation, Intermezzo Line", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8a6 b2b3 f8b4 c1d2 d8e7": "Queen's Indian Defense: Fianchetto Variation, Check Variation, Modern Line", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8a6": "Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8a6 d1a4": "Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation, Nimzowitsch Attack", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8a6 b2b3": "Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation, Quiet Line", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8a6 d1b3": "Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation, Timman's Line", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 c7c5 d4d5 e6d5 f3h4": "Queen's Indian Defense: Fianchetto Variation, Rubinstein Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 c7c5": "Queen's Indian Defense: Fianchetto Variation, S\u00e4misch Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7": "Queen's Indian Defense: Fianchetto Variation, Traditional Line", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8b4": "Queen's Indian Defense: Capablanca Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8b4 c1d2 b4e7": "Queen's Indian Defense: Riumin Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 f8b4 c1d2 a7a5 g2g3 b7b6 f1g2 c8b7": "Queen's Indian Defense: Yates Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7 b1c3": "Queen's Indian Defense: Anti-Queen's Indian System", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7 e1g1": "Queen's Indian Defense: Classical Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7 e1g1 e8g8 d4d5 e6d5 f3h4": "Queen's Indian Defense: Classical Variation, Polugaevsky Gambit", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7 e1g1 e8g8 d4d5 e6d5 f3d4": "Queen's Indian Defense: Classical Variation, Taimanov Gambit", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7 e1g1 e8g8 b2b3": "Queen's Indian Defense: Euwe Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7 e1g1 e8g8 f1e1": "Queen's Indian Defense: Fianchetto Variation, Kramnik Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7 b1c3 f6e4 c1d2": "Queen's Indian Defense: Opocensky Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7": "Queen's Indian Defense: Traditional Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7 e1g1 e8g8 b1c3 b8a6": "Queen's Indian Defense: Classical Variation, Tiviakov Defense", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7 e1g1 e8g8 b1c3": "Queen's Indian Defense: Classical Variation, Traditional Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7 e1g1 e8g8 b1c3 d7d5": "Queen's Indian Defense: Classical Variation, Traditional Variation, Nimzowitsch Line", "d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7 e1g1 e8g8 b1c3 f6e4 d1c2 e4c3 c2c3": "Queen's Indian Defense: Classical Variation, Traditional Variation, Main Line", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4": "Nimzo-Indian Defense", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 f2f3": "Nimzo-Indian Defense: Kmoch Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1d3": "Nimzo-Indian Defense: Mikenas Attack", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 g2g3": "Nimzo-Indian Defense: Romanishin Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 g1f3 c7c5 g2g3 e8g8 f1g2": "Nimzo-Indian Defense: Romanishin Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 g1f3 c7c5 g2g3 c5d4 f3d4 e8g8 f1g2 d7d5 c4d5 f6d5": "Nimzo-Indian Defense: Romanishin Variation, English Hybrid", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 g1f3": "Nimzo-Indian Defense: Three Knights Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 g1f3 c7c5 d4d5 f6e4": "Nimzo-Indian Defense: Three Knights Variation, Euwe Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 g1f3 c7c5 d4d5": "Nimzo-Indian Defense: Three Knights Variation, Korchnoi Variation", "d2d4 g8f6 c2c4 e7e6 g1f3 f8b4 b1c3 c7c5 d4d5 b7b5": "Nimzo-Indian Defense: Three Knights Variation, Shocron Gambit", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1b3": "Nimzo-Indian Defense: Spielmann Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1b3 c7c5 d4c5 b8c6 g1f3 f6e4 c1d2 e4d2": "Nimzo-Indian Defense: Spielmann Variation, Karlsbad Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1b3 c7c5 d4c5 b8c6": "Nimzo-Indian Defense: Spielmann Variation, Romanovsky Gambit", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1b3 c7c5 d4c5 b8c6 g1f3 f6e4 c1d2 e4c5": "Nimzo-Indian Defense: Spielmann Variation, Stahlberg Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1b3 c7c5 d4c5 b8c6 g1f3 f6e4 c1d2 e4c5 b3c2 f7f5 g2g3": "Nimzo-Indian Defense: Spielmann Variation, Stahlberg Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3": "Nimzo-Indian Defense: S\u00e4misch Variation, Accelerated", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 f2f3 d7d5 a2a3 b4c3 b2c3 c7c5 e2e3 e8g8 c4d5 f6d5": "Nimzo-Indian Defense: S\u00e4misch Variation, Botvinnik Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 f2f3 d7d5 a2a3 b4c3 b2c3 c7c5 c4d5": "Nimzo-Indian Defense: S\u00e4misch Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 f2f3 d7d5 a2a3 b4c3 b2c3 c7c5 c4d5 f6d5 d4c5": "Nimzo-Indian Defense: S\u00e4misch Variation, Keres Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 f2f3 d7d5 a2a3 b4c3 b2c3 c7c5 c4d5 f6d5 d4c5 f7f5": "Nimzo-Indian Defense: S\u00e4misch Variation, Romanovsky Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3 c7c5 e2e3": "Nimzo-Indian Defense: S\u00e4misch Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3 c7c5 e2e3 b7b6": "Nimzo-Indian Defense: S\u00e4misch Variation, O'Kelly Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3 e8g8": "Nimzo-Indian Defense: S\u00e4misch Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 a2a3 b4c3 b2c3": "Nimzo-Indian Defense: S\u00e4misch Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 c7c5 f1d3 b8c6 a2a3 b4c3 b2c3 e8g8": "Nimzo-Indian Defense: S\u00e4misch Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 c7c5 f1d3 b8c6 a2a3 b4c3 b2c3 e8g8 g1e2 b7b6 e3e4 f6e8": "Nimzo-Indian Defense: S\u00e4misch Variation, Capablanca Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 c1g5": "Nimzo-Indian Defense: Leningrad Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 c1g5 h7h6 g5h4 c7c5 d4d5 b7b5": "Nimzo-Indian Defense: Leningrad Variation, Averbakh Gambit", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 c1g5 h7h6 g5h4 c7c5 d4d5 d7d6": "Nimzo-Indian Defense: Leningrad Variation, Benoni Defense", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2": "Nimzo-Indian Defense: Classical Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 e8g8 a2a3 b4c3 c2c3 b7b6": "Nimzo-Indian Defense: Classical Variation, Keres Defense", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 e8g8 a2a3 b4c3 c2c3 b7b5": "Nimzo-Indian Defense: Classical Variation, Vitolins-Adorjan Gambit", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 b8c6 g1f3 d7d6": "Nimzo-Indian Defense: Classical Variation, Milner-Barry Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 b8c6": "Nimzo-Indian Defense: Classical Variation, Zurich Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5 c4d5 d8d5 g1f3 d5f5 c2d1 e6e5": "Nimzo-Indian Defense: Classical Variation, Belyavsky Gambit", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5": "Nimzo-Indian Defense: Classical Variation, Noa Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5 c4d5 e6d5": "Nimzo-Indian Defense: Classical Variation, Noa Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5 a2a3": "Nimzo-Indian Defense: Classical Variation, Noa Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5 a2a3 b4c3 c2c3 b8c6": "Nimzo-Indian Defense: Classical Variation, Noa Variation, Botvinnik Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5 a2a3 b4c3 c2c3 f6e4": "Nimzo-Indian Defense: Classical Variation, Noa Variation, Main Line", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5 a2a3 b4c3 c2c3 f6e4 c3c2": "Nimzo-Indian Defense: Classical Variation, Noa Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5 a2a3 b4c3 c2c3 f6e4 c3c2 b8c6 e2e3 e6e5": "Nimzo-Indian Defense: Classical Variation, Noa Variation, San Remo Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 c7c5": "Nimzo-Indian Defense: Classical Variation, Berlin Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 c7c5 d4c5 b4c3": "Nimzo-Indian Defense: Classical Variation, Berlin Variation, Steiner Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 c7c5 d4c5 e8g8 a2a3 b4c5 g1f3 b7b6 c1f4": "Nimzo-Indian Defense: Classical Variation, Berlin Variation, Macieja System", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 c7c5 d4c5 e8g8": "Nimzo-Indian Defense: Classical Variation, Berlin Variation, Pirc Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3": "Nimzo-Indian Defense: Normal Line", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 b8c6": "Nimzo-Indian Defense: Normal Variation, Taimanov Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 c7c5": "Nimzo-Indian Defense: H\u00fcbner Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 c7c5 f1d3 b8c6 g1f3 b4c3 b2c3 d7d6": "Nimzo-Indian Defense: H\u00fcbner Variation, Main Line", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 c7c5 g1f3 e8g8": "Nimzo-Indian Defense: Normal Variation, H\u00fcbner Deferred", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 c7c5 g1e2": "Nimzo-Indian Defense: H\u00fcbner Variation, Rubinstein Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 c7c5 g1e2 c5d4 e3d4 e8g8 a2a3": "Nimzo-Indian Defense: H\u00fcbner Variation, Rubinstein Variation, Main Line", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 c7c5 g1e2 c5d4 e3d4 e8g8 c4c5": "Nimzo-Indian Defense: H\u00fcbner Variation, Rubinstein Variation, Sherbakov Attack", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 b7b6": "Nimzo-Indian Defense: St. Petersburg Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 b7b6 f1d3 c8b7 g1f3": "Nimzo-Indian Defense: St. Petersburg Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 b7b6 f1d3 c8b7 g1f3 e8g8": "Nimzo-Indian Defense: St. Petersburg Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 b7b6 f1d3 c8b7 g1f3 e8g8 e1g1": "Nimzo-Indian Defense: St. Petersburg Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 b7b6 f1d3 c8b7 g1f3 e8g8 e1g1 c7c5": "Nimzo-Indian Defense: St. Petersburg Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 b7b6 f1d3 c8b7 g1f3 e8g8 e1g1 c7c5 c3a4 c5d4 a2a3 b4e7": "Nimzo-Indian Defense: St. Petersburg Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 f6e4 d1c2 f7f5 g1f3 b7b6 f1d3 c8b7": "Nimzo-Indian Defense: St. Petersburg Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 f1d3 c7c5 g1f3 b7b6 e1g1 c8b7 c3a4 d8e7": "Nimzo-Indian Defense: St. Petersburg Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 g1f3 b4c3 b2c3 b7b6 e2e3 c8b7 f1d3 e8g8 e1g1": "Nimzo-Indian Defense: St. Petersburg Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 g1f3 b7b6 e2e3 f6e4 d1c2": "Nimzo-Indian Defense: St. Petersburg Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 g1f3 b7b6 e2e3 f6e4 d1c2 c8b7 f1d3 b4c3 b2c3 f7f5 e1g1": "Nimzo-Indian Defense: St. Petersburg Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 b7b6 f1d3 c8b7 g1f3 f6e4": "Nimzo-Indian Defense: St. Petersburg Variation, with Ne4", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 b7b6 g1e2": "Nimzo-Indian Defense: Fischer Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 b7b6 g1e2 c8a6": "Nimzo-Indian Defense: Normal Variation, Bronstein (Byrne) Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8": "Nimzo-Indian Defense: Normal Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1e2": "Nimzo-Indian Defense: Reshevsky Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1e2 d7d5 a2a3 b4d6": "Nimzo-Indian Defense: Simagin Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 f1d3": "Nimzo-Indian Defense: Normal Variation, Bishop Attack", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 f1d3 d7d5": "Nimzo-Indian Defense: Normal Variation, Bishop Attack, Classical Defense", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 f1d3 d7d5 g1f3 b8c6 e1g1": "Nimzo-Indian Defense: Ragozin Defense", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 f1d3 d7d5 a2a3 b4c3 b2c3": "Nimzo-Indian Defense: Normal Variation, Botvinnik System", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3": "Nimzo-Indian Defense", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5": "Nimzo-Indian Defense: Normal Variation, Ragozin Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 a2a3": "Nimzo-Indian Defense: Normal Variation, S\u00e4misch Deferred", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 f1d3 d7d5 g1f3 b8c6 e1g1 d5c4": "Nimzo-Indian Defense: Ragozin Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 f1d3 d7d5 g1f3 b7b6": "Nimzo-Indian Defense: Normal Variation, Schlechter Defense", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 b7b6 f1d3 c8b7 g1f3 e8g8 e1g1 d7d5": "Nimzo-Indian Defense: Normal Variation, Schlechter Defense", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 f1d3 d7d5 g1f3 c7c5": "Nimzo-Indian Defense: Normal Variation, Gligoric System", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 f1d3 d7d5 g1f3 c7c5 e1g1 b8d7": "Nimzo-Indian Defense: Normal Variation, Gligoric System", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 f1d3 d7d5 g1f3 c7c5 e1g1 b7b6": "Nimzo-Indian Defense: Normal Variation, Gligoric System, Keres Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 f1d3 d7d5 g1f3 c7c5 e1g1 d5c4 d3c4": "Nimzo-Indian Defense: Normal Variation, Gligoric System, Exchange Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 f1d3 d7d5 g1f3 c7c5 e1g1 d5c4 d3c4 d8e7": "Nimzo-Indian Defense: Normal Variation, Gligoric System, Smyslov Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 f1d3 d7d5 g1f3 c7c5 e1g1 d5c4 d3c4 b8d7": "Nimzo-Indian Defense: Normal Variation, Gligoric System, Bronstein Variation", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 f1d3 d7d5 g1f3 c7c5 e1g1 b8c6": "Nimzo-Indian Defense: Normal Variation, Gligoric System, Bernstein Defense", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 f1d3 d7d5 g1f3 c7c5 e1g1 b8c6 a2a3 b4c3 b2c3": "Nimzo-Indian Defense: Normal Variation, Bernstein Defense, Exchange Line", "d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 f1d3 d7d5 g1f3 c7c5 e1g1 b8c6 a2a3 b4c3 b2c3 d5c4 d3c4": "Nimzo-Indian Defense: Normal Variation, Bernstein Defense", "d2d4 g8f6 c2c4 g7g6 g2g3 f8g7 f1g2 d7d5": "Gr\u00fcnfeld Defense: Counterthrust Variation", "d2d4 g8f6 c2c4 g7g6 d4d5 b7b5": "Indian Defense: Anti-Gr\u00fcnfeld, Adorjan Gambit", "d2d4 g8f6 c2c4 g7g6 d4d5": "Indian Defense: Anti-Gr\u00fcnfeld, Advance Variation", "d2d4 g8f6 c2c4 g7g6 f2f3": "Indian Defense: Anti-Gr\u00fcnfeld, Alekhine Variation", "d2d4 g8f6 c2c4 g7g6 f2f3 e7e5": "Indian Defense: Anti-Gr\u00fcnfeld, Alekhine Variation, Leko Gambit", "d2d4 g8f6 c2c4 g7g6 h2h4": "Indian Defense: Anti-Gr\u00fcnfeld, Basman-Williams Attack", "d2d4 g8f6 c2c4 g7g6 g2g3 f8g7 f1g2": "Indian Defense: King's Indian Variation, Fianchetto Variation", "d2d4 g8f6 c2c4 g7g6": "Indian Defense: West Indian Defense", "d2d4 g8f6 c2c4 g7g6 g2g3": "King's Indian Defense: Fianchetto Variation, Immediate Fianchetto", "d2d4 g8f6 g1f3 g7g6 c2c4": "King's Indian Defense: Normal Variation, King's Knight Variation", "d2d4 g8f6 c2c4 g7g6 g1f3 f8g7 b2b4": "King's Indian Defense: Santasiere Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 e8g8 e2e3 d7d6 f1e2 c7c6": "King's Indian Defense: Semi-Classical Variation, Benoni Variation", "d2d4 g8f6 g1f3 g7g6 c2c4 f8g7 b1c3 e8g8 e2e3 d7d6 f1e2 b8c6": "King's Indian Defense: Semi-Classical Variation, Hollywood Variation", "d2d4 g8f6 c2c4 g7g6 d1c2": "Queen's Pawn, Mengarini Attack", "d2d4 g8f6 c2c4 g7g6 b1c3": "King's Indian Defense", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 c7c6 e1g1 d8b6": "King's Indian Defense: Fianchetto Variation, Benjamin Defense", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 e8g8 e2e3 d7d6 f1e2": "King's Indian Defense: Semi-Classical Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 e8g8 e2e3 d7d6 f1e2 b8d7 e1g1 e7e5 d4e5 d6e5": "King's Indian Defense: Semi-Classical Variation, Exchange Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 e8g8 e2e3 d7d6 f1e2 b8d7 e1g1 e7e5 b2b4": "King's Indian Defense: Semi-Classical Variation, Queenside Storm Line", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 c1g5": "King's Indian Defense: Smyslov Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3": "King's Indian Defense: Fianchetto Variation, Delayed Fianchetto", "d2d4 g8f6 c2c4 g7g6 g2g3 f8g7 f1g2 e8g8 b1c3 d7d6 g1f3 b8c6": "King's Indian Defense: Fianchetto Variation, Karlsbad Variation", "d2d4 g8f6 c2c4 g7g6 g1f3 f8g7 g2g3 e8g8 f1g2 d7d6 e1g1 c7c6 b1c3 d8a5": "King's Indian Defense: Fianchetto Variation, Kavalek Defense", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 c7c6 e1g1 c8f5": "King's Indian Defense: Fianchetto Variation, Larsen Defense", "d2d4 g8f6 c2c4 g7g6 g2g3 f8g7 f1g2 e8g8 b1c3 d7d6 g1f3 b8c6 e1g1 c8f5": "King's Indian Defense: Fianchetto Variation, Lesser Simagin (Spassky)", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 b8c6 e1g1 c8g4": "King's Indian Defense: Fianchetto Variation, Simagin Variation", "d2d4 g8f6 c2c4 g7g6 g1f3 f8g7 g2g3 e8g8 f1g2 d7d6 e1g1 b8c6 b1c3 e7e5": "King's Indian Defense: Fianchetto Variation, Uhlmann-Szabo System", "d2d4 g8f6 c2c4 g7g6 g1f3 f8g7 g2g3 e8g8 f1g2 d7d6 e1g1 b8c6 b1c3 a7a6": "King's Indian Defense: Fianchetto Variation, Panno Variation", "d2d4 g8f6 c2c4 g7g6 g1f3 f8g7 g2g3 e8g8 f1g2 d7d6 e1g1 b8c6 b1c3 a7a6 d4d5 c6a5 f3d2 c7c5 d1c2 e7e5": "King's Indian Defense: Fianchetto Variation, Panno Variation, Blockade Line", "d2d4 g8f6 c2c4 g7g6 g1f3 f8g7 g2g3 e8g8 f1g2 d7d6 e1g1 b8c6 b1c3 a7a6 d4d5 c6a5 f3d2 c7c5 d1c2 a8b8 b2b3 b7b5 c1b2 b5c4 b3c4 g7h6": "King's Indian Defense: Fianchetto Variation, Panno Variation, Donner Line", "d2d4 g8f6 c2c4 g7g6 g1f3 f8g7 g2g3 e8g8 f1g2 d7d6 e1g1 b8c6 b1c3 a7a6 h2h3 a8b8 c1e3 b7b5 f3d2": "King's Indian Defense: Fianchetto Variation, Panno Variation, Korchnoi Line", "d2d4 g8f6 c2c4 g7g6 g1f3 f8g7 g2g3 d7d6 f1g2 e8g8 e1g1 b8d7 b1c3 e7e5 b2b3": "King's Indian Defense: Fianchetto Variation, Double Fianchetto Attack", "d2d4 g8f6 c2c4 g7g6 g1f3 f8g7 g2g3 d7d6 f1g2 e8g8 e1g1 b8d7 b1c3 a7a6": "King's Indian Defense: Fianchetto Variation, Hungarian Variation", "d2d4 g8f6 c2c4 g7g6 g1f3 f8g7 g2g3 c7c5 f1g2 d8a5": "King's Indian Defense: Fianchetto Variation, Pterodactyl Variation", "d2d4 g8f6 c2c4 g7g6 g1f3 f8g7 g2g3 d7d6 f1g2 e8g8 e1g1 c7c5": "King's Indian Defense: Fianchetto Variation, Yugoslav System", "d2d4 g8f6 c2c4 g7g6 g2g3 f8g7 f1g2 e8g8 b1c3 d7d6 g1f3 c7c5": "King's Indian Defense: Fianchetto Variation, Yugoslav Variation, Rare Line", "d2d4 g8f6 c2c4 g7g6 g1f3 f8g7 g2g3 e8g8 f1g2 d7d6 e1g1 c7c5 b1c3": "King's Indian Defense: Fianchetto Variation, Yugoslav Variation", "d2d4 g8f6 c2c4 g7g6 g1f3 f8g7 g2g3 e8g8 f1g2 d7d6 e1g1 c7c5 b1c3 b8c6 d4c5 d6c5": "King's Indian Defense: Fianchetto Variation, Yugoslav Variation, Exchange Line", "d2d4 g8f6 c2c4 g7g6 g1f3 f8g7 g2g3 e8g8 f1g2 d7d6 e1g1 c7c5 b1c3 b8c6 d4d5": "King's Indian Defense: Fianchetto Variation, Yugoslav Variation, Advance Line", "d2d4 g8f6 c2c4 g7g6 g1f3 f8g7 g2g3 e8g8 f1g2 d7d6 e1g1 b8d7 b1c3 e7e5": "King's Indian Defense: Fianchetto Variation, Classical Fianchetto", "d2d4 g8f6 c2c4 g7g6 g2g3 f8g7 f1g2 e8g8 b1c3 d7d6 g1f3 b8d7": "King's Indian Defense: Fianchetto Variation, Debrecen Defense", "d2d4 g8f6 c2c4 g7g6 g1f3 f8g7 g2g3 e8g8 f1g2 d7d6 e1g1 b8d7 b1c3 e7e5 e2e4": "King's Indian Defense: Fianchetto Variation, Classical Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 b8d7 e1g1 e7e5 e2e4 f8e8 h2h3 e5d4 f3d4 d7c5 f1e1 a7a5": "King's Indian Defense: Fianchetto Variation, Long Variation", "d2d4 g8f6 c2c4 g7g6 g1f3 f8g7 g2g3 e8g8 f1g2 d7d6 e1g1 b8d7 b1c3 e7e5 e2e4 c7c6 h2h3": "King's Indian Defense: Fianchetto Variation, Classical Main Line", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 c1g5": "King's Indian Defense: Accelerated Averbakh Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1e2": "King's Indian Defense: Kramer Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4": "King's Indian Defense: Normal Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6": "King's Indian Defense: Normal Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 h2h3": "King's Indian Defense: Makogonov Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g2g3": "King's Indian Defense: Normal Variation, Deferred Fianchetto", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g2g3 e8g8 f1g2 e7e5 g1e2": "King's Indian Defense: Pomar System", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f1e2 e8g8 c1g5": "King's Indian Defense: Averbakh Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f1e2 e8g8 c1g5 h7h6": "King's Indian Defense: Averbakh Variation, Flexible Defense", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f1e2 e8g8 c1g5 b8d7": "King's Indian Defense: Averbakh Variation, Geller Defense", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f1e2 e8g8 c1g5 b8a6": "King's Indian Defense: Averbakh Variation, Modern Defense", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f1e2 e8g8 c1g5 b8a6 d1d2 c7c6": "King's Indian Defense: Averbakh Variation, Modern Defense, Burgess Line", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f1e2 e8g8 c1g5 b8c6": "King's Indian Defense: Averbakh Variation, Nc6 Defense", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f1e2 e8g8 c1g5 a7a6": "King's Indian Defense: Averbakh Variation, Spanish Defense", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f1e2": "King's Indian Defense: Normal Variation, Standard Development", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f1e2 e8g8 c1e3": "King's Indian Defense: Semi-Averbakh System", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f1e2 e8g8 c1g5 c7c5": "King's Indian Defense: Averbakh Variation, Benoni Defense", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f1e2 e8g8 c1g5 c7c5 d4d5": "King's Indian Defense: Averbakh Variation, Benoni Defense, Advance Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f1e2 e8g8 c1g5 c7c5 d4c5": "King's Indian Defense: Averbakh Variation, Benoni Defense, Exchange Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f1e2 e8g8 c1g5 c7c5 d4d5 e7e6": "King's Indian Defense: Averbakh Variation, Main Line", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f4": "King's Indian Defense: Four Pawns Attack", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f4 e8g8 g1f3 c7c5 d4d5": "King's Indian Defense: Four Pawns Attack, Dynamic Attack", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f4 b8a6": "King's Indian Defense: Four Pawns Attack, Modern Defense", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f1e2 e8g8 f2f4": "King's Indian Defense: Four Pawns Attack", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f4 e8g8 g1f3 c7c5 d4d5 e7e6 f1e2 e6d5 e4e5": "King's Indian Defense: Four Pawns Attack, Florentine Gambit", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f4 e8g8 g1f3 c7c5 d4d5 e7e6 f1e2": "King's Indian Defense: Four Pawns Attack, Normal Attack", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f4 e8g8 f1e2 c7c5 d4d5 e7e6 d5e6 f7e6 g2g4 b8c6 h2h4": "King's Indian Defense: Six Pawns Attack", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f4 e8g8 g1f3 c7c5 f1e2": "King's Indian Defense: Four Pawns Attack, Fluid Attack", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f4 e8g8 g1f3 c7c5 f1e2 c5d4 f3d4 b8c6 c1e3": "King's Indian Defense: Four Pawns Attack, Exchange Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3": "King's Indian Defense: S\u00e4misch Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1g5": "King's Indian Defense: Steiner Attack", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 g1e2": "King's Indian Defense: S\u00e4misch Variation, Bobotsov-Korchnoi-Petrosian Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 c7c6 f1d3 a7a6": "King's Indian Defense: S\u00e4misch Variation, Byrne Defense", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8": "King's Indian Defense: S\u00e4misch Variation, Normal Defense", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 c7c5": "King's Indian Defense: S\u00e4misch Variation, S\u00e4misch Gambit", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 b7b6": "King's Indian Defense: S\u00e4misch Variation, Double Fianchetto", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 b8c6 g1e2 a7a6": "King's Indian Defense: S\u00e4misch Variation, Panno Formation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 b8c6 g1e2 a8b8": "King's Indian Defense: S\u00e4misch Variation, Ruban Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 b8c6": "King's Indian Defense: S\u00e4misch Variation, Yates Defense", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 b8c6 g1e2 a7a6 d1d2 a8b8": "King's Indian Defense: S\u00e4misch Variation, Panno Main Line", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 e7e5": "King's Indian Defense: S\u00e4misch Variation, Orthodox Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 e7e5 g1e2 c7c6": "King's Indian Defense: S\u00e4misch Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 e7e5 d4d5 f6h5 d1d2 d8h4 g2g3 h5g3 d2f2 g3f1 f2h4 f1e3 e1e2": "King's Indian Defense: S\u00e4misch Variation, Bronstein Defense", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 e7e5 d4d5": "King's Indian Defense: S\u00e4misch Variation, Closed Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 e7e5 d4d5 f6h5 d1d2 d8h4 g2g3 h5g3 d2f2 g3f1 f2h4 f1e3 e1e2 e3c4": "King's Indian Defense: S\u00e4misch Variation, Orthodox Variation, Bronstein Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 e7e5 g1e2 c7c6 d4d5 c6d5": "King's Indian Defense: S\u00e4misch Variation, Closed Variation, Main Line", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 c1e3": "King's Indian Defense: Larsen Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3": "King's Indian Defense: Normal Variation, Rare Defenses", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 c1g5": "King's Indian Defense: Zinnowitz Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 b8a6": "King's Indian Defense: Kazakh Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2": "King's Indian Defense: Orthodox Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 d4e5": "King's Indian Defense: Exchange Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5": "King's Indian Defense: Orthodox Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 c1e3": "King's Indian Defense: Orthodox Variation, Gligoric-Taimanov System", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 d4d5": "King's Indian Defense: Petrosian Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 d4d5 a7a5": "King's Indian Defense: Petrosian Variation, Stein Defense", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 d4d5 b8d7 c1g5 h7h6 g5h4 g6g5 h4g3 f6h5 h2h4": "King's Indian Defense: Petrosian Variation, Keres Defense", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 d4d5 b8d7": "King's Indian Defense: Petrosian Variation, Normal Defense", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1": "King's Indian Defense: Orthodox Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 c7c6": "King's Indian Defense: Orthodox Variation, Donner Defense", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 b8a6": "King's Indian Defense: Orthodox Variation, Glek Defense", "d2d4 g8f6 c2c4 d7d6 b1c3 b8d7 e2e4 e7e5 g1f3 g7g6 f1e2 f8g7 e1g1 e8g8": "King's Indian Defense: Orthodox Variation, Positional Defense", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 b8d7 e1g1 e7e5 d4d5": "King's Indian Defense: Orthodox Variation, Positional Defense, Closed Line", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 a7a5": "King's Indian Defense: Orthodox Variation, Ukrainian Defense", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 b8d7 f1e1": "King's Indian Defense: Orthodox Variation", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 b8d7 f1e1 c7c6 e2f1 a7a5": "King's Indian Defense: Orthodox Variation, Positional Defense, Main Line", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 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"King's Indian Defense: Orthodox Variation, Classical System", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 b8c6 d4d5 c6e7 f3e1 f6d7 c1e3 f7f5 f2f3 f5f4 e3f2 g6g5 a1c1 e7g6 c4c5": "King's Indian Defense: Orthodox Variation, Classical System, Kozul Gambit", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 b8c6 d4d5 c6e7 f3e1 f6d7 c1e3": "King's Indian Defense: Orthodox Variation, Classical System, Neo-Classical Line", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 b8c6 d4d5 c6e7 f3e1 f6d7 f2f3 f7f5 g2g4": "King's Indian Defense: Orthodox Variation, Classical System, Benko Attack", "d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 b8c6 d4d5 c6e7 f3e1 f6d7 f2f3 f7f5": "King's Indian Defense: Orthodox Variation, Classical System, Traditional Line"}} \ No newline at end of file diff --git a/assets/puzzles/checkables.json b/assets/puzzles/checkables.json deleted file mode 100644 index e3db440..0000000 --- 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"https://lichess.org/syzVB2xo#109", "gameMoveNumber": null, "highlights": [], "level": 1, "extra": {}, "solutionCount": 3, "pieceCount": 10}]} \ No newline at end of file diff --git a/generate-positions.py b/generate-positions.py deleted file mode 100755 index 5389761..0000000 --- a/generate-positions.py +++ /dev/null @@ -1,411 +0,0 @@ -#!/usr/bin/env python - -# Core -import json -import itertools -import random -import logging -import os -import requests -from dataclasses import dataclass, field, asdict - -# CLICK -import click - -# Chess -import chess -import chess.pgn - -# Pandas -import pandas as pd - -# TQDM -from tqdm import tqdm - -PIECE_VALUES = { - chess.PAWN: 1, - chess.KNIGHT: 3, - chess.BISHOP: 3, - chess.ROOK: 5, - chess.QUEEN: 9, -} - -@click.group() -def cli(): - pass - -COLORS = [chess.WHITE, chess.BLACK] -PIECES = [chess.PAWN, chess.KNIGHT, chess.BISHOP, chess.ROOK, chess.QUEEN] - -@cli.command(name='write-games') -@click.argument('out_path', type=click.Path()) -def cli_write_games(out_path): - # Remove the existing file if it exists. - # We will be appending to it as we go. - if os.path.exists(out_path): - os.remove(out_path) - - # List of Lichess usernames to scrape - usernames = [ - "bestieboots", - "Chess4Coffee", - "Cause_Complications", - "NoseKnowsAll", - "Bubbleboy", - "WoodJRx", - ] - - # Scrape games for each user - for username in usernames: - max_results = 200 - url = f"https://lichess.org/api/games/user/{username}?max={max_results}&evals=false&perfType=classical,rapid" - - # Make a GET request to the URL - response = requests.get(url) - - # Append the response content to the games file - with open(out_path, "ab") as file: - file.write(response.content) - -@cli.command(name='write-puzzles') -@click.argument('positions_path', type=click.Path(exists=True)) -@click.argument('out_path', type=click.Path()) -@click.option('--min-piece-count', default=4) -@click.option('--max-piece-count', default=24) -@click.option('--max-solution-count', default=4) -@click.option('--min-solution-count', default=1) -@click.option('--min-piece-per-solution', default=2) -@click.option('--max-piece-per-solution', default=12) -def cli_write_puzzles(positions_path, out_path, min_piece_count, max_piece_count, min_solution_count, max_solution_count, min_piece_per_solution, max_piece_per_solution): - df = pd.read_json(positions_path, lines=True) - logging.info(f'Weeding {len(df)} puzzles') - - df["solutionCount"] = df["solutions"].map(len) - df = df[ - (df["solutionCount"] <= max_solution_count) & - (df["solutionCount"] >= min_solution_count) & - (df["pieceCount"] >= min_piece_count) & - (df["pieceCount"] <= max_piece_count) & - (df["pieceCount"] / df["solutionCount"] >= min_piece_per_solution) & - (df["pieceCount"] / df["solutionCount"] <= max_piece_per_solution) - ][["fen", "solutions", "site"]] - - def is_worthy(fen): - board = chess.Board(fen) - return not board.is_game_over() and board.is_valid() - - df = df[df["fen"].apply(is_worthy)] - - logging.info(f'Found {len(df)} interesting puzzles') - - df = df.sample(min(len(df), 2000)) - - df.to_json(out_path, orient="records") - -@cli.command(name="write-positions") -@click.argument('pgn_path', type=click.Path(exists=True)) -@click.argument('out_path', type=click.Path()) -def cli_write_positions(pgn_path, out_path): - positions = [] - for game in tqdm(games_reader(pgn_path)): - board = game.board() - for idx, move in enumerate(game.mainline_moves()): - board.push(move) - if board.is_game_over(): - continue - - fen = board.fen() - if "[" in fen: - break - - move_number = idx + 1 - positions.append({ - "fen": board.fen(), - "moveNumber": move_number, - "pieceCount": len(board.piece_map()), - "site": f"{game.headers['Site']}#{move_number}", - }) - - df = pd.DataFrame(positions) - df.drop_duplicates(subset=["fen"], inplace=True) - df.to_json(out_path, orient="records", lines=True) - -@cli.command(name="knight-forkables") -@click.argument('out_path', type=click.Path()) -def cli_knight_forkables(out_path): - puzzles = [] - - pieces = [ - chess.Piece(chess.KING, chess.WHITE), - chess.Piece(chess.QUEEN, chess.WHITE), - chess.Piece(chess.ROOK, chess.WHITE), - ] - - puzzle_sets = [] - for n in range(2, len(pieces) + 1): - forks, no_solutions = get_knight_forks(pieces[0:n]) - no_solutions = list(random.sample(no_solutions, len(forks))) - - puzzle_sets.append(forks) - puzzle_sets.append(no_solutions) - - max_size = min(len(ps) for ps in puzzle_sets) - puzzles = [] - for puzzle_set in puzzle_sets: - puzzles += random.sample(puzzle_set, max_size) - - with open(out_path, "w") as f: - json.dump(puzzles, f) - -@cli.command(name='checks-captures') -@click.argument('positions_path', type=click.Path(exists=True)) -@click.argument('out_path', type=click.Path()) -def cli_checks_captures(positions_path, out_path): - def get_solutions(fen): - board = chess.Board(fen) - - # Skip positions where there's an active check - if board.is_check(): - return None - - solutions = {} - for turn_color in chess.COLORS: - board.turn = turn_color - for continuation in board.legal_moves: - if not (board.is_capture(continuation) or board.gives_check(continuation)): - continue - - if board.is_en_passant(continuation): - continue - - square_pair = chess.square_name(continuation.from_square) + chess.square_name(continuation.to_square) - solutions[square_pair] = board.san(continuation) or continuation - - if not solutions: - return None - - return solutions - - process_positions(positions_path, out_path, get_solutions) - -@cli.command(name="memorizer") -@click.argument('pgn_path', type=click.Path(exists=True)) -def cli_memorizer(pgn_path): - game = chess.pgn.read_game(open(pgn_path)) - if not game: - return - - out = [] - board = game.board() - for move in game.mainline_moves(): - fen = board.fen() - out.append({ - "fen": fen, - "solution": move.uci(), - }) - board.push(move) - - out.append({"fen": board.fen(), "solution": ""}) - - print(json.dumps(out)) - -@cli.command(name="counting") -@click.argument('games_path', type=click.Path(exists=True)) -@click.argument('out_path', default="assets/puzzles/counting.json", type=click.Path()) -def cli_counting(games_path, out_path): - def get_solutions(game): - solutions = [] - board = game.board() - captures = [] - fens = [board.fen()] - first_move_number = 0 - turn_color = board.turn - solution = 0 - - for move_number, move in enumerate(game.mainline_moves(), 1): - if board.is_capture(move) and not board.is_en_passant(move): - captured_piece = board.piece_type_at(move.to_square) - captures.append(move) - change = PIECE_VALUES[captured_piece] - if board.turn == turn_color: - solution += change - else: - solution -= change - else: - if len(captures) > 2: - solutions.append({ - "fens": fens, - "highlights": [[chess.square_name(c.to_square)] for c in captures] + [[]], - "solutions": {solution: solution}, - "moveNumber": first_move_number, - }) - captures = [] - - # The next move - first_move_number = move_number + 1 - turn_color = not board.turn - solution = 0 - fens = [] - - board.push(move) - fens.append(board.fen()) - - return solutions - - process_games(games_path, out_path, get_solutions) - -@cli.command(name="opening-tree") -@click.argument('openings_path', type=click.Path(exists=True)) -@click.argument('out_path', default="assets/opening-tree.json", type=click.Path()) -def cli_opening_tree(openings_path, out_path): - df = pd.read_csv(openings_path, sep="\t") - tree = {} - opening_names = {} - for uci, name in zip(df["uci"], df["name"]): - continuations = tree - for move in uci.split(): - if move not in continuations: - continuations[move] = {} - continuations = continuations[move] - - if uci in opening_names: - print("Duplicate opening name!") - - opening_names[uci] = name - - out = { - "tree": tree, - "names": opening_names, - } - - with open(out_path, "w") as f: - json.dump(out, f) - -@cli.command(name="undefended") -@click.argument('positions_path', type=click.Path(exists=True)) -@click.argument('out_path', type=click.Path()) -def cli_undefended(positions_path, out_path): - def get_solutions(fen): - board = chess.Board(fen) - - solutions = {s: s for s in get_undefended_squares(board)} - if not solutions: - return None - - return solutions - - process_positions(positions_path, out_path, get_solutions) - -def process_games(games_path, out_path, get_solutions): - games = [] - with open(games_path) as f: - while True: - game = chess.pgn.read_game(f) - if game is None: - break # end of file - - games.append(game) - - solutions = [] - for game in tqdm(games): - for solution in get_solutions(game): - if not solution: - continue - - solution["site"] = get_site(game, solution["moveNumber"]) - solutions.append(solution) - - out_df = pd.DataFrame(solutions) - out_df.to_json(out_path, orient="records") - -def process_positions(positions_path, out_path, get_solutions): - reader = pd.read_json(positions_path, chunksize=1000, lines=True) - - outs = [] - for df in tqdm(reader): - df["solutions"] = df["fen"].map(get_solutions) - outs.append(df) - - out_df = pd.concat(outs) - out_df.dropna(subset=["solutions"], inplace=True) - - out_df.to_json(out_path, orient="records", lines=True) - -def get_undefended_squares(board): - undefended_squares = set() - for color in COLORS: - for chessman in PIECES: - for square in board.pieces(chessman, color): - defender_squares = board.attackers(color, square) - - if not defender_squares: - undefended_squares.add(chess.SQUARE_NAMES[square]) - - return undefended_squares - -def is_mate_1(board): - board = board.copy() - for color in COLORS: - board.turn = color - for move in board.legal_moves: - board.push(move) - if board.is_checkmate(): - return True - board.pop() - - return False - -def get_knight_forks(pieces): - puzzles = [] - no_solutions = [] - for piece_squares, board in piece_combinations(pieces): - fen = board.fen() - - # Find the squares that adding a knight to what create a fork - knight_fork_squares = [] - for square in chess.SQUARES: - if square in piece_squares: - continue - - board.set_piece_at(square, chess.Piece(chess.KNIGHT, chess.BLACK)) - - if all([board.is_attacked_by(chess.BLACK, s) for s in piece_squares]): - knight_fork_squares.append(square) - - board.remove_piece_at(square) - - puzzle = { "fen": fen, "solutions": [] } - if knight_fork_squares: - solutions = [chess.SQUARE_NAMES[square] for square in knight_fork_squares] - puzzle["solutions"] = { s: s for s in solutions} - puzzles.append(puzzle) - else: - no_solutions.append(puzzle) - - return puzzles, no_solutions - -def piece_combinations(pieces): - for piece_squares in itertools.combinations(chess.SQUARES, len(pieces)): - board = chess.Board() - - board.clear() - for idx, piece in enumerate(pieces): - board.set_piece_at(piece_squares[idx], piece) - - yield piece_squares, board - -def games_reader(pgn_path): - with open(pgn_path) as pgn_file: - while True: - game = chess.pgn.read_game(pgn_file) - if game is None: - break - - yield game - -def get_site(game, move_number): - return f"{game.headers['Site']}#{move_number - 1}" - -if __name__ == '__main__': - logging.basicConfig(level=logging.INFO) - cli() diff --git a/generate-puzzles/chesscoven/common.py b/generate-puzzles/chesscoven/common.py new file mode 100644 index 0000000..d34c59d --- /dev/null +++ b/generate-puzzles/chesscoven/common.py @@ -0,0 +1,126 @@ +#!/usr/bin/env python + +# Core +import itertools +import requests +from typing import Optional, Any +from dataclasses import dataclass, field + +# Chess +import chess +import chess.pgn + +PIECE_VALUES = { + chess.PAWN: 1, + chess.KNIGHT: 3, + chess.BISHOP: 3, + chess.ROOK: 5, + chess.QUEEN: 9, +} + +PIECES = [chess.PAWN, chess.KNIGHT, chess.BISHOP, chess.ROOK, chess.QUEEN] + + +@dataclass +class Puzzle: + fens: list = field(default_factory=list) + solution_aliases: dict[str, str] = field(default_factory=dict) + solutions: list = field(default_factory=list) + site: Optional[str] = None + game_move_number: Optional[int] = None + highlights: list[list[str]] = field(default_factory=list) + level: int = 1 + extra: dict[str, Any] = field(default_factory=dict) + + +def count_pieces(fen=None, board=None): + if fen is not None: + board = chess.Board(fen) + + return len(board.piece_map()) + + +def get_undefended_squares(board): + undefended_squares = set() + for color in chess.COLORS: + for chessman in PIECES: + for square in board.pieces(chessman, color): + defender_squares = board.attackers(color, square) + + if not defender_squares: + undefended_squares.add(chess.SQUARE_NAMES[square]) + + return undefended_squares + + +def is_mate_1(board): + board = board.copy() + for color in chess.COLORS: + board.turn = color + for move in board.legal_moves: + board.push(move) + if board.is_checkmate(): + return True + board.pop() + + return False + + +def piece_combinations(pieces): + for piece_squares in itertools.combinations(chess.SQUARES, len(pieces)): + board = chess.Board() + + board.clear() + for idx, piece in enumerate(pieces): + board.set_piece_at(piece_squares[idx], piece) + + yield piece_squares, board + + +def games_reader(pgn_path): + with open(pgn_path) as pgn_file: + while True: + game = chess.pgn.read_game(pgn_file) + if game is None: + break + + yield game + + +def get_site(game, move_number): + return f"{game.headers['Site']}#{move_number - 1}" + + +def get_lichess_games(usernames): + # Scrape games for each user + for username in usernames: + max_results = 400 + for perf_type in ["classical", "rapid", "blitz"]: + url = f"https://lichess.org/api/games/user/{username}?max={max_results}&evals=false&perfType={perf_type}" + print(url) + + response = requests.get(url) + yield response.content + + +def get_even_distribution(df, label): + groups = df.groupby(label) + size = min(len(group) for _, group in groups) + return groups.apply(lambda x: x.sample(size)) + + +def print_stats(df): + stats = get_stats(df) + indent = " " * 2 + loglines = [] + loglines.append("# Levels") + for level, count in stats["levels"].items(): + loglines.append(f"{indent}{level} - {count}") + + print("\n".join(loglines)) + + +def get_stats(df): + levels = dict(df.groupby("level").size()) + + return {"levels": levels} diff --git a/generate-puzzles/chesscoven/pipeline.py b/generate-puzzles/chesscoven/pipeline.py new file mode 100644 index 0000000..6691dd6 --- /dev/null +++ b/generate-puzzles/chesscoven/pipeline.py @@ -0,0 +1,187 @@ +# Core +import logging +import json +from dataclasses import asdict + +# Pandas +import pandas as pd + +# TQDM +from tqdm import tqdm + +# Chess +import chess +import chess.pgn + +# Ours +from chesscoven.common import get_site, count_pieces, print_stats + + +def from_positions(positions_path, generate_puzzles, **kv): + reader = pd.read_json(positions_path, chunksize=1000, lines=True) + + puzzles = [] + for df in tqdm(reader): + for fen, site in zip(df["fen"], df["site"]): + for puzzle in generate_puzzles(fen): + if not puzzle.site: + puzzle.site = site + if not puzzle.fens: + puzzle.fens = [fen] + + puzzles.append(puzzle) + + return puzzles + + +def from_games(pgn_path, generate_puzzles, **kv): + games = [] + with open(pgn_path) as f: + while True: + game = chess.pgn.read_game(f) + if game is None: + break # end of file + + games.append(game) + + puzzles = [] + for game in tqdm(games): + for puzzle in generate_puzzles(game): + if puzzle.game_move_number and not puzzle.site: + puzzle.site = get_site(game, puzzle.game_move_number) + + puzzles.append(puzzle) + + return puzzles + + +def from_self(generate_puzzles, **kv): + return generate_puzzles() + + +def passthrough(df): + return df + + +def to_camel(name): + components = name.split("_") + + return "".join( + [components[0]] + + [c.capitalize() for c in components[1:]] + ) + + +def to_df(puzzles): + rows = [] + for puzzle in puzzles: + row = {} + for k, v in asdict(puzzle).items(): + row[to_camel(k)] = v + + row["solutionCount"] = len(puzzle.solutions) + row["pieceCount"] = count_pieces(fen=puzzle.fens[0]) + + rows.append(row) + + return pd.DataFrame(rows) + + +def build_pruner( + min_piece_count=4, + max_piece_count=24, + max_solution_count=4, + min_solution_count=1, + min_piece_per_solution=2, + max_piece_per_solution=12 +): + def prune(df): + df = df[ + (df["solutionCount"] <= max_solution_count) & + (df["solutionCount"] >= min_solution_count) & + (df["pieceCount"] >= min_piece_count) & + (df["pieceCount"] <= max_piece_count) & + (df["pieceCount"] / df["solutionCount"] >= min_piece_per_solution) & + (df["pieceCount"] / df["solutionCount"] <= max_piece_per_solution) + ] + + def is_worthy(fens): + board = chess.Board(fens[0]) + return not board.is_game_over() and board.is_valid() + + df = df[df["fens"].apply(is_worthy)] + + logging.info(f'Found {len(df)} interesting puzzles') + + df = df.sample(min(len(df), 2000)) + + return df + + return prune + + +def write_puzzles(df, out_path): + by_level = df.groupby("level") + out = { + level: group.to_dict(orient="records") + for level, group in by_level + } + + with open(out_path, "w") as f: + json.dump(out, f) + + logging.info(f"Wrote {len(df)} puzzles to {out_path}") + + +def run_pipeline(puzzle_name, manifest, should_overwrite): + logging.info(f"### Running pipeline for {puzzle_name}") + + pgn_path = manifest["paths"]["source_games_path"] + positions_path = manifest["paths"]["source_positions_path"] + puzzles_dir = manifest["paths"]["puzzles_dir"] + out_path = puzzles_dir / (puzzle_name + ".json") + + if out_path.exists() and not should_overwrite: + logging.info( + f"Skipping re-genearting {out_path}. Use --overwrite-assets to force.") + return + + puzzle_manifest = manifest["puzzles"][puzzle_name] + load = puzzle_manifest["load"] + generate_puzzles = puzzle_manifest["generate_puzzles"] + prune = puzzle_manifest["prune"] + + puzzles = load( + pgn_path=pgn_path, + positions_path=positions_path, + generate_puzzles=generate_puzzles + ) + + if not puzzles: + logging.error( + f"Zero candidate puzzles generated! Skipping {out_path}") + return + else: + logging.info(f"Generated {len(puzzles)} candidate puzzles") + + df = to_df(puzzles) + df = prune(df) + + logging.info(f"Pruned {len(puzzles) - len(df)} puzzles.") + + before_dedup = len(df) + df["fens"].drop_duplicates(inplace=True) + dup_drop_count = before_dedup - len(df) + if dup_drop_count: + logging.warning(f"Dropped {dup_drop_count} duplicate positions") + + if len(df) == 0: + logging.error( + f"Zero puzzles left! Skipping {out_path}") + return + else: + logging.info(f"Selected {len(puzzles)} puzzles") + + print_stats(df) + + write_puzzles(df, out_path) diff --git a/generate-puzzles/chesscoven/puzzles/checkscaptures.py b/generate-puzzles/chesscoven/puzzles/checkscaptures.py new file mode 100644 index 0000000..eab7e2b --- /dev/null +++ b/generate-puzzles/chesscoven/puzzles/checkscaptures.py @@ -0,0 +1,33 @@ +import chess + +from chesscoven.common import Puzzle + + +def generate_checks_captures(fen): + board = chess.Board(fen) + + # Skip positions where there's already an active check + if board.is_check(): + return [] + + puzzle = Puzzle() + for turn_color in chess.COLORS: + board.turn = turn_color + for continuation in board.legal_moves: + if not (board.is_capture(continuation) or board.gives_check(continuation)): + continue + + if board.is_en_passant(continuation): + continue + + square_pair = chess.square_name( + continuation.from_square) + chess.square_name(continuation.to_square) + + puzzle.solutions.append(square_pair) + puzzle.solution_aliases[square_pair] = board.san( + continuation) or continuation + + if not puzzle.solutions: + return [] + + return [puzzle] diff --git a/generate-puzzles/chesscoven/puzzles/counting.py b/generate-puzzles/chesscoven/puzzles/counting.py new file mode 100644 index 0000000..34a3bb2 --- /dev/null +++ b/generate-puzzles/chesscoven/puzzles/counting.py @@ -0,0 +1,150 @@ +from dataclasses import dataclass + +from chesscoven.common import PIECE_VALUES, Puzzle, get_even_distribution + +import chess + +import pandas as pd + + +@dataclass +class Capture: + to_square: chess.Square + captured_piece: chess.PieceType + captured_color: chess.Color + + +def generate_counting(game): + puzzles = [] + board = game.board() + + captures = [] + fens = [board.fen()] + first_move_number = 0 + for move_number, move in enumerate(game.mainline_moves(), 1): + if board.is_capture(move) and not board.is_en_passant(move): + capture = Capture(to_square=move.to_square, + captured_piece=board.piece_type_at( + move.to_square), + captured_color=not board.turn) + captures.append(capture) + else: + if len(captures) > 0: + puzzles.append(build_puzzle(fens, captures, first_move_number)) + captures = [] + fens = [] + # The next move + first_move_number = move_number + 1 + + board.push(move) + fens.append(board.fen()) + + return puzzles + + +def get_square_diversity(captures): + return len(set(c.to_square for c in captures)) + + +def get_piece_value_diversity(captures): + return len(set(PIECE_VALUES[c.captured_piece] for c in captures)) + + +def calc_level(captures): + square_diversity = get_square_diversity(captures) + + # Make our math easier by establishing invariants + assert square_diversity > 0 + assert len(captures) > 0 + + capture_level = min(len(captures), 5) + if square_diversity == 1: + return min(len(captures), 5) + + return min(square_diversity, 5) + capture_level + + +def build_puzzle(fens, captures, first_move_number): + return Puzzle( + solutions=[calculate_solution(captures)], + fens=fens, + highlights=[ + [chess.square_name(c.to_square)] for c in captures + ] + [[]], + game_move_number=first_move_number, + level=calc_level(captures), + extra={"captures": captures} + ) + + +# TODO max captures +def prune_counting(df): + def is_white_to_play(extra): + return extra["captures"][0]["captured_color"] == chess.BLACK + + def classify_trade(solution): + if solution == 0: + return "T" + elif solution > 0: + return "G" + elif solution < 0: + return "L" + + # Supplement + df["solution"] = df["solutions"].apply(lambda s: s[0]) + df["is_white_to_play"] = df["extra"].apply(is_white_to_play) + df["trade_type"] = df["solution"].apply(classify_trade) + df["piece_value_diversity"] = df["extra"].apply( + lambda x: get_piece_value_diversity([Capture(**c) for c in x["captures"]])) + df["capture_count"] = df["extra"].apply(lambda x: len(x["captures"])) + df["is_odd_captures"] = df["capture_count"].apply(lambda c: c % 2 != 0) + + # Prune all levels + df = df[df["is_white_to_play"]] + + # Prune level 1 + by_level = {level: group for level, group in df.groupby("level")} + lvl_1 = by_level[1] + solution_counts = lvl_1["solution"].value_counts() + + target_size = min(solution_counts[points] for points in [1, 3, 5]) + by_level[1] = lvl_1.groupby("solution").sample(target_size, replace=True) + + # Prune level > 1 + for level in by_level: + if level == 1: + continue + + lvl_df = by_level[level] + by_oddity = { + is_odd: group + for is_odd, group in lvl_df.groupby("is_odd_captures") + } + for is_odd in by_oddity: + if is_odd: + by_oddity[is_odd] = get_even_distribution( + by_oddity[is_odd], df["trade_type"] == "G") + else: + by_oddity[is_odd] = get_even_distribution( + by_oddity[is_odd], "trade_type") + + by_level[level] = pd.concat(list(by_oddity.values())) + + df = pd.concat(list(by_level.values())) + + # breakpoint() + + return df + + +def calculate_solution(captures): + solution = 0 + player_color = not captures[0].captured_color + for capture in captures: + value = PIECE_VALUES[capture.captured_piece] + if player_color == capture.captured_color: + solution -= value + else: + solution += value + + return solution diff --git a/generate-puzzles/chesscoven/puzzles/knightforkables.py b/generate-puzzles/chesscoven/puzzles/knightforkables.py new file mode 100644 index 0000000..0118d55 --- /dev/null +++ b/generate-puzzles/chesscoven/puzzles/knightforkables.py @@ -0,0 +1,57 @@ +from chesscoven.common import piece_combinations, Puzzle + +import chess +import random + + +def generate_knight_forkable(): + pieces = [ + chess.Piece(chess.KING, chess.WHITE), + chess.Piece(chess.QUEEN, chess.WHITE), + chess.Piece(chess.ROOK, chess.WHITE), + ] + + puzzle_sets = [] + for n in range(2, len(pieces) + 1): + forks, no_solutions = get_knight_forks(pieces[0:n]) + no_solutions = list(random.sample(no_solutions, len(forks))) + + puzzle_sets.append(forks) + puzzle_sets.append(no_solutions) + + max_size = min(len(ps) for ps in puzzle_sets) + puzzles = [] + for puzzle_set in puzzle_sets: + puzzles += random.sample(puzzle_set, max_size) + + return puzzles + + +def get_knight_forks(pieces): + puzzles = [] + no_solutions = [] + for piece_squares, board in piece_combinations(pieces): + fen = board.fen() + + # Find the squares that adding a knight to what create a fork + knight_fork_squares = [] + for square in chess.SQUARES: + if square in piece_squares: + continue + + board.set_piece_at(square, chess.Piece(chess.KNIGHT, chess.BLACK)) + + if all([board.is_attacked_by(chess.BLACK, s) for s in piece_squares]): + knight_fork_squares.append(square) + + board.remove_piece_at(square) + + puzzle = Puzzle(fens=[fen]) + if knight_fork_squares: + puzzle.solutions = \ + [chess.SQUARE_NAMES[square] for square in knight_fork_squares] + puzzles.append(puzzle) + else: + no_solutions.append(puzzle) + + return puzzles, no_solutions diff --git a/generate-puzzles/chesscoven/puzzles/undefended.py b/generate-puzzles/chesscoven/puzzles/undefended.py new file mode 100644 index 0000000..3c45e82 --- /dev/null +++ b/generate-puzzles/chesscoven/puzzles/undefended.py @@ -0,0 +1,13 @@ +from chesscoven.common import get_undefended_squares, Puzzle + +import chess + + +def generate_undefended(fen): + board = chess.Board(fen) + + solutions = get_undefended_squares(board) + if not solutions: + return [] + + return [Puzzle(solutions=list(solutions))] diff --git a/generate-puzzles/main.py b/generate-puzzles/main.py new file mode 100755 index 0000000..542185f --- /dev/null +++ b/generate-puzzles/main.py @@ -0,0 +1,229 @@ +#!/usr/bin/env python + +# Core +import json +import logging +import os +import pathlib + +# CLICK +import click + +# Chess +import chess +import chess.pgn + +# Pandas +import pandas as pd + +# TQDM +from tqdm import tqdm + +# Ours +from chesscoven.puzzles.checkscaptures import generate_checks_captures +from chesscoven.puzzles.undefended import generate_undefended +from chesscoven.puzzles.counting import generate_counting, prune_counting +from chesscoven.puzzles.knightforkables import generate_knight_forkable + +from chesscoven.pipeline import \ + run_pipeline, from_self, from_positions, from_games, passthrough, \ + build_pruner + +from chesscoven.common import \ + get_lichess_games, games_reader, count_pieces + + +def load_puzzle_names(): + return list(load_manifest()["puzzles"].keys()) + + +def load_manifest(build_dir=None, assets_dir=None): + paths = {} + + if build_dir is not None: + build_dir = pathlib.Path(build_dir) + paths |= { + "source_games_path": build_dir / "games.pgn", + "source_positions_path": build_dir / "positions.json", + } + + if assets_dir is not None: + assets_dir = pathlib.Path(assets_dir) + paths |= { + "assets_dir": assets_dir, + "puzzles_dir": assets_dir / "puzzles", + } + + return { + "paths": paths, + "puzzles": { + "knight-forks": { + "load": from_self, + "generate_puzzles": generate_knight_forkable, + "prune": passthrough + }, + "counting": { + "load": from_games, + "generate_puzzles": generate_counting, + "prune": prune_counting, + }, + "checks-captures": { + "load": from_positions, + "generate_puzzles": generate_checks_captures, + "prune": build_pruner(), + }, + "undefended": { + "load": from_positions, + "generate_puzzles": generate_undefended, + "prune": build_pruner(), + }, + }, + "sources": { + "lichess_usernames": [ + "bestieboots", + "Chess4Coffee", + "Cause_Complications", + "NoseKnowsAll", + "Bubbleboy", + "WoodJRx", + "Noobmasterplayer123", + "Benwick", + ] + } + } + + +@click.group() +def cli(): + pass + + +@cli.command(name="generate") +@click.argument("puzzle_name", type=click.Choice(load_puzzle_names())) +@click.argument("assets_dir", type=click.Path()) +@click.option("--build-dir", "build_dir", default="build", type=click.Path()) +def cli_generate(puzzle_name, build_dir, assets_dir): + manifest = load_manifest(build_dir, assets_dir) + + run_pipeline(puzzle_name, manifest, True) + + +@cli.command(name="all") +@click.argument("assets_dir", type=click.Path()) +@click.option("--build-dir", "build_dir", default="build", type=click.Path()) +@click.option("--refetch", "should_refetch", is_flag=True, default=False) +@click.option("--overwrite-assets", "should_overwrite_assets", is_flag=True, default=False) +@click.option("--build-dir", "build_dir", default="build", type=click.Path()) +def cli_all(build_dir, assets_dir, should_refetch, should_overwrite_assets): + manifest = load_manifest(build_dir, assets_dir) + + os.makedirs(build_dir, exist_ok=True) + + pgn_path = manifest["paths"]["source_games_path"] + positions_path = manifest["paths"]["source_positions_path"] + + if should_refetch or not pgn_path.exists(): + cli_fetch_games(pgn_path, manifest) + else: + logging.info( + f"Skipping re-genearting {pgn_path}. Use --refetch to force.") + + if should_refetch or not positions_path.exists(): + cli_extract_positions(pgn_path, positions_path) + else: + logging.info( + f"Skipping re-genearting {positions_path}. Use --refetch to force.") + + for puzzle_name in manifest["puzzles"]: + run_pipeline(puzzle_name, manifest, should_overwrite_assets) + + +def cli_fetch_games(pgn_path, manifest): + logging.info("Retreiving and storing source games from lichess") + if os.path.exists(pgn_path): + os.remove(pgn_path) + + usernames = manifest["sources"]["lichess_usernames"] + for pgn in tqdm(get_lichess_games(usernames), total=len(usernames)): + with open(pgn_path, "ab") as file: + file.write(pgn) + + +def cli_extract_positions(pgn_path, positions_path): + logging.info("Extracting and storing positions from source games") + positions = [] + for game in tqdm(games_reader(pgn_path)): + board = game.board() + for idx, move in enumerate(game.mainline_moves()): + board.push(move) + if board.is_game_over(): + continue + + fen = board.fen() + if "[" in fen: + break + + move_number = idx + 1 + positions.append({ + "fen": board.fen(), + "moveNumber": move_number, + "pieceCount": count_pieces(board=board), + "site": f"{game.headers['Site']}#{move_number}", + }) + + df = pd.DataFrame(positions) + df.drop_duplicates(subset=["fen"], inplace=True) + df.to_json(positions_path, orient="records", lines=True) + + +@cli.command(name="memorizer") +@click.argument('pgn_path', type=click.Path(exists=True)) +def cli_memorizer(pgn_path): + game = chess.pgn.read_game(open(pgn_path)) + if not game: + return + out = [] + board = game.board() + for move in game.mainline_moves(): + fen = board.fen() + out.append({ + "fen": fen, + "solution": move.uci(), + }) + board.push(move) + out.append({"fen": board.fen(), "solution": ""}) + + print(json.dumps(out)) + + +@cli.command(name="opening-tree") +@click.argument('openings_path', type=click.Path(exists=True)) +@click.argument('out_path', default="assets/opening-tree.json", type=click.Path()) +def cli_opening_tree(openings_path, out_path): + df = pd.read_csv(openings_path, sep="\t") + tree = {} + opening_names = {} + for uci, name in zip(df["uci"], df["name"]): + continuations = tree + for move in uci.split(): + if move not in continuations: + continuations[move] = {} + continuations = continuations[move] + + if uci in opening_names: + logging.warn("Duplicate opening name!") + + opening_names[uci] = name + + out = { + "tree": tree, + "names": opening_names, + } + + with open(out_path, "w") as f: + json.dump(out, f) + + +if __name__ == '__main__': + logging.basicConfig(level=logging.INFO) + cli() diff --git a/package-lock.json b/package-lock.json index e48cad2..9ea92a0 100644 --- a/package-lock.json +++ b/package-lock.json @@ -15,6 +15,7 @@ "bindings": "^1.5.0", "chessground": "^9.0.4", "next": "14.1.3", + "random": "^4.1.0", "react": "18.2.0", "react-chess-pieces": "^1.1.2", "react-dom": "18.2.0", @@ -24,7 +25,8 @@ "react-icons": "^5.0.1", "semver": "^7.6.0", "simple-update-notifier": "^2.0.0", - "tailwindcss": "3.4.1" + "tailwindcss": "3.4.1", + "zod": "^3.22.4" }, "devDependencies": { "@cspell/eslint-plugin": "^8.6.0", @@ -41,12 +43,12 @@ 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"@esbuild/win32-arm64": "0.19.12", + "@esbuild/win32-ia32": "0.19.12", + "@esbuild/win32-x64": "0.19.12" + } + }, "node_modules/escalade": { "version": "3.1.2", "resolved": "https://registry.npmjs.org/escalade/-/escalade-3.1.2.tgz", @@ -4916,9 +5324,9 @@ } }, "node_modules/eslint-plugin-tailwindcss": { - "version": "3.15.0", - "resolved": "https://registry.npmjs.org/eslint-plugin-tailwindcss/-/eslint-plugin-tailwindcss-3.15.0.tgz", - "integrity": "sha512-mRs8OGJMxkCl8cD0wGjr9NbcRYJCN3D1TfgmIGb1L+3opqYyTT1jjVau1s6SUdVJqci3EfbxG60TJQtgqfEtTw==", + "version": "3.15.1", + "resolved": "https://registry.npmjs.org/eslint-plugin-tailwindcss/-/eslint-plugin-tailwindcss-3.15.1.tgz", + "integrity": "sha512-4RXRMIaMG07C2TBEW1k0VM4+dDazz1kxcZhkK4zirvmHGZTA4jnlSO2kq5mamuSPi+Wo17dh2SlC8IyFBuCd7Q==", "dev": true, "dependencies": { "fast-glob": "^3.2.5", @@ -8463,79 +8871,6 @@ "url": "https://github.com/prettier/prettier?sponsor=1" } }, - "node_modules/prettier-plugin-tailwindcss": { - "version": 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{ - "optional": true - }, - "@shopify/prettier-plugin-liquid": { - "optional": true - }, - "@trivago/prettier-plugin-sort-imports": { - "optional": true - }, - "prettier-plugin-astro": { - "optional": true - }, - "prettier-plugin-css-order": { - "optional": true - }, - "prettier-plugin-import-sort": { - "optional": true - }, - "prettier-plugin-jsdoc": { - "optional": true - }, - "prettier-plugin-marko": { - "optional": true - }, - "prettier-plugin-organize-attributes": { - "optional": true - }, - "prettier-plugin-organize-imports": { - "optional": true - }, - "prettier-plugin-sort-imports": { - "optional": true - }, - "prettier-plugin-style-order": { - "optional": true - }, - "prettier-plugin-svelte": { - "optional": true - }, - "prettier-plugin-twig-melody": { - "optional": true - } - } - }, "node_modules/pretty-format": { "version": "27.5.1", "resolved": "https://registry.npmjs.org/pretty-format/-/pretty-format-27.5.1.tgz", @@ -8646,6 +8981,17 @@ } ] }, + "node_modules/random": { + "version": "4.1.0", + "resolved": "https://registry.npmjs.org/random/-/random-4.1.0.tgz", + "integrity": "sha512-6Ajb7XmMSE9EFAMGC3kg9mvE7fGlBip25mYYuSMzw/uUSrmGilvZo2qwX3RnTRjwXkwkS+4swse9otZ92VjAtQ==", + "dependencies": { + "seedrandom": "^3.0.5" + }, + "engines": { + "node": ">=14" + } + }, "node_modules/react": { "version": "18.2.0", "resolved": "https://registry.npmjs.org/react/-/react-18.2.0.tgz", @@ -9058,6 +9404,11 @@ "loose-envify": "^1.1.0" } }, + "node_modules/seedrandom": { + "version": "3.0.5", + "resolved": "https://registry.npmjs.org/seedrandom/-/seedrandom-3.0.5.tgz", + "integrity": "sha512-8OwmbklUNzwezjGInmZ+2clQmExQPvomqjL7LFqOYqtmuxRgQYqOD3mHaU+MvZn5FLUeVxVfQjwLZW/n/JFuqg==" + }, "node_modules/semver": { "version": "7.6.0", "resolved": "https://registry.npmjs.org/semver/-/semver-7.6.0.tgz", @@ -9798,6 +10149,25 @@ "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.6.2.tgz", "integrity": 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"sha512-iC+8Io04lddc+mVqQ9AZ7OQ2MrUKGN+oIQyq1vemgt46jwCwLfhq7/pwnBnNXXXZb8VTVLKwp9EDkx+ryxIWmg==", + "funding": { + "url": "https://github.com/sponsors/colinhacks" + } } } } diff --git a/package.json b/package.json index 46e0030..7668ebc 100644 --- a/package.json +++ b/package.json @@ -8,7 +8,8 @@ "start": "next start", "lint": "next lint", "lint:fix": "next lint --fix", - "test": "jest" + "test": "jest", + "validate": "tsx ./src/scripts/validate-puzzles.ts" }, "dependencies": { "@types/node": "20.11.26", @@ -18,6 +19,7 @@ "bindings": "^1.5.0", "chessground": "^9.0.4", "next": "14.1.3", + "random": "^4.1.0", "react": "18.2.0", "react-chess-pieces": "^1.1.2", "react-dom": "18.2.0", @@ -27,7 +29,8 @@ "react-icons": "^5.0.1", "semver": "^7.6.0", "simple-update-notifier": "^2.0.0", - "tailwindcss": "3.4.1" + "tailwindcss": "3.4.1", + "zod": "^3.22.4" }, "devDependencies": { "@cspell/eslint-plugin": "^8.6.0", @@ -44,11 +47,12 @@ "eslint-config-prettier": "^9.1.0", "eslint-plugin-jsx-a11y": "^6.8.0", "eslint-plugin-spellcheck": "^0.0.20", - "eslint-plugin-tailwindcss": "^3.15.0", + "eslint-plugin-tailwindcss": "^3.15.1", "jest": "^29.7.0", "jest-environment-jsdom": "^29.7.0", "postcss": "^8.4.35", "prettier": "^3.2.5", + "tsx": "^4.7.1", "typescript": "^5.4.2" } } diff --git a/public/images/background-images.jpg b/public/images/background-images.jpg index f3026bd..9a74699 100644 Binary files a/public/images/background-images.jpg and b/public/images/background-images.jpg differ diff --git a/src/app/games/[gameId]/play/page.tsx b/src/app/games/[gameId]/play/page.tsx new file mode 100644 index 0000000..99b27ab --- /dev/null +++ b/src/app/games/[gameId]/play/page.tsx @@ -0,0 +1,91 @@ +// random +import random from "random"; + +// NextJS +import { notFound } from "next/navigation"; + +// Components +import { Game } from "@/components/Game"; +import { games, getFlavor, getLogic } from "@/games"; +import type { APIResponse, GameLevel, LevelId, Puzzle } from "@/types"; +import { newError } from "@/types"; + +type HasParams = { + params: { + gameId: string; + }; +}; + +const PUZZLES_PER_LEVEL = 10; + +async function getLevel( + gameId: string, + levelId: LevelId, +): Promise> { + "use server"; + + const { collection } = games[gameId]; + if (collection === undefined) { + return newError("Game not found"); + } + let nextLevelId = levelId; + let candidates: Puzzle[] = []; + if (levelId === "all") { + candidates = Object.values(collection).flat(); + } else { + candidates = collection[levelId]; + + nextLevelId = Number(levelId) + 1; + if (!collection[nextLevelId]) { + nextLevelId = "all"; + } + } + + if (candidates === undefined) { + return newError("Level not found"); + } + + const puzzles = []; + for (let i = 0; i < PUZZLES_PER_LEVEL; i++) { + const idx = random.int(0, candidates.length - 1); + const [puzzle] = candidates.splice(idx, 1); + if (puzzle === undefined) { + break; + } + + puzzles.push(puzzle); + } + + const name = levelId == "all" ? "Random" : `Level ${levelId}`; + + return { success: true, data: { name, puzzles, nextLevelId } }; +} +export default async function Page({ params: { gameId } }: HasParams) { + const flavor = getFlavor(gameId); + if (flavor == null) { + return notFound(); + } + + const logic = getLogic(gameId); + if (flavor == null) { + return notFound(); + } + + const levelResp = await getLevel(gameId, 1); + if (!levelResp.success) { + console.error(levelResp.error); + return notFound(); + } + + return ( +
+ +
+ ); +} diff --git a/src/app/games/[gameId]/start/layout.tsx b/src/app/games/[gameId]/start/layout.tsx new file mode 100644 index 0000000..c45772e --- /dev/null +++ b/src/app/games/[gameId]/start/layout.tsx @@ -0,0 +1,37 @@ +// React +import React from "react"; + +// NextJS +import Link from "next/link"; + +// Components +import { SiteNav } from "@/components/SiteNav"; + +// Styles +import "@/app/globals.css"; +import { Footer } from "@/components/Footer"; + +export default function Layout({ children }: { children: React.ReactNode }) { + return ( + <> +
+
+
+ + Chess Coven + + +
+
+
+
{children}
+
+
+
+