1985    Garry Kasparov 22, of the Soviet Union becomes the youngest World Chess Champion by beating Anatoly Karpov, also of the Soviet Union.

1996    The IBM supercomputer Deep Blue defeats Garry Kasparov for the first time.

1996    In Philadelphia, Pennsylvania, world champion Garry Kasparov beats the Deep Blue supercomputer in a chess match.

1997    IBM Deep Blue, a chess-playing supercomputer, defeats Garry Kasparov in the last game of the rematch, becoming the first computer to beat a world-champion chess player in a classic match format.