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* source code:
https://github.com/cmsrs/checkers/


Below is a brief outline of the game of checkers which I used while creating my game:

- a piece may move one space diagonally forward to a free square,
- a piece can capture forward as well as backward,
- a king may move diagonally across any number of unoccupied squares forward or backward and during the same move it can capture its opponent,
- capturing is compulsory,
- the winner is the player who captures or blocks all the opponent's pieces,
- in case of triple repetition of the player's and the opponent's move there is a draw.