Human–computer chess matches notebook. The computers won 8.5 to 3.5. The humans won one game: Karjakin, the youngest and lowest rated player, defeated Deep Junior. In November 2005, 3 former FIDE world chess champions—Alexander Khalifman, Ruslan Ponomariov and Rustam Kasimdzhanov—played against computers Hydra, Junior and Fritz. The computers won 8 to 4. The Ponomariov vs Fritz game on November 21, 2005 is the last known win by a human against a top performing computer under normal chess tournament conditions. In 2005, Hydra, a dedicated chess computer with custom hardware and sixty-four processors and also winner of the 14th IPCCC in 2005, crushed seventh-ranked
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