Checkers International - Download

Play nine checkers variations from throughout Europe, including Alquerque (the oldest living checkers variation), Polish Draughts (played on a ten- by-ten board) and more! You can play against a friend or against a fast and deadly computer opponent. And after you register, you can create new variations of checkers by mixing the rules and playing-boards from other variations--you can even play your creations against the computer!

http://www.randomly.com/pub/checkers.zip