Checkers International - Version 1.1 Play nine checkers variations from throughout Europe, including Alquerque (the oldest living checkers variation) and Polish Draughts (played on a ten-by-ten board)! Checkers International lets you play against a friend, or against a fast and deadly computer opponent. Registration allows you to create custom checkers variations, mixing and matching boards and rules from known variations--and you can even play customized variations against the computer!