Predictions made by Ray Kurzweil this decade." Deep Fritz is a computer chess program—generally considered superior to the older Deep Blue — that has defeated or tied a number of human chess masters and opposing chess programs. Due to advances in personal computer performance, the Deep Fritz program can now run on ordinary personal computers, and different versions of it are available for purchase. In September 2002, "Chessmaster 9000", a widely available chess playing game from Ubisoft, defeated the then U.S. Chess Champion and International Grandmaster Larry Christiansen in a four-game match. In 2006 reigning World Champion Vladimir Kramnik was defeated 4:2 by Deep Fritz,
Computer chess able to draw matches against former world champion Garry Kasparov and classical world champion Vladimir Kramnik. In October 2002, Vladimir Kramnik and Deep Fritz competed in the eight-game Brains in Bahrain match, which ended in a draw. Kramnik won games 2 and 3 by "conventional" anti-computer tactics – play conservatively for a long-term advantage the computer is not able to see in its game tree search. Fritz, however, won game 5 after a severe blunder by Kramnik. Game 6 was described by the tournament commentators as "spectacular." Kramnik, in a better position in the early middlegame, tried a piece sacrifice