A simple program which solves sudoku problems
This program uses the concept of backtracking. The program needs to be fed with the question by entering the numbers in the given problem in the form of a list, but needs input by changing a part of code which contains the sample list already given.
NOTE : The blank spaces (which needs to be filled by us) should be entered as "0".
The program when runned, first prints the initial sudoku problem, solves and then prints the solved sudoku problem as its output