Murray Campbell His peak Elo rating was around 2200. North American Computer Chess Championship: Member of winning teams in 1985 (HiTech), 1987 (ChipTest), 1988 (Deep Thought), 1989 (HiTech and Deep Thought), 1990 (Deep Thought), 1991 (Deep Thought) and 1994 (Deep Thought). 1989 World Computer Chess Championship, winning team (Deep Thought) Campbell shared the $100,000 Fredkin Prize with Feng-hsiung Hsu and A. Joseph Hoane Jr. in 1997. The prize was awarded for developing the first computer (Deep Blue) to defeat a reigning world chess champion in a match. Campbell received the Allen Newell Research Excellence Medal in 1997, citing his contributions to Deep
Reversi game has been particularly attractive to programmers. Therefore, the best Othello computer programs have easily defeated the best humans since 1980, when the program "The Moor" beat the reigning world champion. In 1997, Logistello defeated the human champion Takeshi Murakami with a score of 6–0. Analysts have estimated the number of legal positions in Othello is at most 10, and it has a game-tree complexity of approximately 10. Mathematically, Othello still remains unsolved. Experts have not absolutely resolved what the outcome of a game will be where both sides use perfect play. However, analysis of thousands of high quality games