Deep Blue (chess computer) offer, but Kasparov refused a rematch. Deep Blue, with its capability of evaluating 200 million positions per second, was the fastest computer to face a world chess champion. Today, in computer chess research and matches of world class players against computers, the focus of play has often shifted to software , rather than using dedicated chess hardware. Modern chess programs like Houdini, Rybka, Deep Fritz or Deep Junior are more efficient than the programs during Deep Blue's era. In a November 2006 match between Deep Fritz and world chess champion Vladimir Kramnik, the program ran on a computer system containing
Deep Blue versus Garry Kasparov to exchange the queens. That would have allowed his pawn, which was about to promote, to advance. "May 3". The 1997 rematch began with the King's Indian Attack, which led Kasparov to victory in 45 moves. Deep Blue's 44th move in this game puzzled Kasparov, and he attributed it to "superior intelligence". Allegedly, the move was a result of a bug in which Deep Blue, unable to determine a desirable move, resorted to a fail-safe. Nate Silver proposes that Kasparov "concluded that the counterintuitive play must be a sign of superior intelligence", leading him to lose the second game. "May