Cold Clear 2 is a modern Tetris versus bot and a complete rewrite and evolution of Cold Clear. It implements the Tetris Bot Protocol for interaction with a frontend, such as Quadspace.
- Column-major bitboards
- Multithreaded search
- Transposition-aware game tree
- MCTS-inspired tree expansion
Cold Clear 2 is licensed under either Apache License Version 2.0 or MIT License, at your option.