Deep Blue Bug Shakes Kasparov

In 1997, IBM's supercomputer Deep Blue faced world chess champion Garry Kasparov in a historic rematch. During the first game, the machine made a completely illogical move that baffled Kasparov, who interpreted it as evidence of superior strategy and later admitted it unsettled his play. Years afterward, developers revealed that the move had not been brilliant at all; it was the result of a software bug that forced Deep Blue to select a random legal move.

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