What was the first computer to win a chess match against a world champion?

IBM's Deep Blue became the first computer to defeat a reigning world chess champion under standard tournament time controls, a major milestone in both chess and artificial intelligence history.

On February 10, 1996, Deep Blue won the first game of a six-game match against Garry Kasparov, the world champion at the time. Although Kasparov went on to win the match by scoring three wins and two draws in the remaining games, Deep Blue's initial victory marked the first time a computer had ever beaten a world champion in a regulation-format game.

In May 1997, an upgraded version of Deep Blue faced Kasparov in a much-anticipated rematch. This time, the computer triumphed over the champion in a six-game series, winning two games, drawing three, and losing one – clinching the match 2 – 1 with 3 draws.

The upset shocked the chess world and led Kasparov to accuse IBM of cheating ...