Unbeatable Checkers

Try and beat Chinook, the checkers program described as an "unbeatable program that will choose the best move in every possible situation."

Jonathan Schaeffe, his team and hundreds of computers have been working since 1989 to analyze all possible board combinations of checkers - roughly 500,000,000,000,000,000,000 combinations (500 quintillion) scenarios. End result, unbeatable checkers.