IBM built the first computer that beat a chess champ. But a scientist involved in the project suggests it was a bug in the software that got the best of the grand master.

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Chess Grand Master Garry Kasparov, left, comtemplates his next move against IBM's Deep Blue chess computer while Chung-Jen Tan, manager of the Deep Blue project looks on during the first game of a six-game rematch between Kasparov and Deep Blue in this file photo from 1997. The computer program made history by becoming the first to beat a world chess champion, Kasparov, at a serious game. Photo: Adam Nadel/Associated Press

In May 1997, an IBM supercomputer known as Deep Blue beat then chess world champion Garry Kasparov, who had once bragged he would never lose to a machine.

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Klint Finley is a contributing writer for WIRED covering tech policy, software development, cloud computing, and more. ... Read More

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