Deep Thought (chess computer) Kasparov in 1989 as well as in a correspondence match with Michael Valvo. It was named after Deep Thought, a fictional computer in Douglas Adams' series, "The Hitchhiker's Guide to the Galaxy". The naming of chess computers has continued in this vein with Deep Blue, Deep Fritz, Deep Junior, etc. Deep Thought won the North American Computer Chess Championship in 1988 and the World Computer Chess Championship in the year 1989, and its rating, according to the USCF was 2551. In 1994, Deep Thought 2 won the North American Computer Chess Championship for the fifth time, with its rating estimated
Game Over: Kasparov and the Machine into a perpetual check. The next three matches ended in draws, with Kasparov appearing to weaken psychologically. Deep Blue went on to win the decisive sixth game, marking the first time in history that a computer defeated the World Champion in a match of several games. From this experience, particularly the second game of the match, Kasparov accused the IBM team of cheating. He suspected that a human player was used during the games to improve the strategic strength of the computer. As a metaphor for this suspicion, the film weaves in the story of the Turk, a hoax involving