Deep Blue versus Garry Kasparov normal chess tournament conditions, and in particular, time controls. "February 11". The second game began with the Open Catalan Opening. Kasparov played in what could be called a preemptive style blocking all Deep Blue's attempts. The game lasted for 73 moves but eventually Deep Blue's operator had to resign the game for the computer in a position where both players had a bishop but Kasparov had three pawns to Deep Blue's one. "February 13". In the third game Kasparov played the Sicilian Defence to which Deep Blue responded with the Alapin Variation. The game lasted for 39 moves and was
Human–computer chess matches points. Humans won 148 ½ points. Yona Kosashvili scored highest for the humans at 6 points out of 6 games. Kallisto scored highest for the computers at 4 ½ points. In 1988, Deep Thought shared first place with Tony Miles in the Software Toolworks Championship, ahead of a former world champion Mikhail Tal and several grandmasters, including Samuel Reshevsky, Walter Browne, and Mikhail Gurevich. It also defeated grandmaster Bent Larsen, making it the first computer to beat a grandmaster in a tournament. Its rating for performance in this tournament of 2745 (USCF scale). In 1989, Levy was defeated by the