Anti-computer tactics is a style of play used by humans to beat strong computer opponents at various games, especially in board games such as chess and Arimaa. It involves playing conservatively for a long-term advantage that the computer is unable to find in its game tree search. This will frequently involve selecting moves that appear sub-optimal in the short term in order to exploit known weaknesses in the way computer players evaluate positions.
One example of the use of anti-computer tactics was Brains in Bahrain, an eight-game chess match between human chess grandmaster, and then World Champion, Vladimir Kramnik and the computer program Deep Fritz 7, held in October 2002. The match ended in a tie 4-4, with two wins for each participant and four draws.
In the 1997 Deep Blue versus Garry Kasparov match, Kasparov played an anti-computer tactic move at the start of the game to get Deep Blue out of its opening book. Kasparov chose the unusual Mieses Opening and thought that the computer would play the opening poorly if it had to play itself rather than use its opening book. Kasparov played similar anti-computer openings in the other games of the match but the tactic backfired.
Anti-computer chess games
- Garry Kasparov vs Deep Blue (Computer) IBM Man-Machine, New York USA 1997
- Garry Kasparov vs X3D Fritz (Computer) Man-Machine World Chess Championship 2003
- Rybka (Computer) vs Hikaru Nakamura ICC blitz 3 0 2008
- Human-computer chess matches
- Horizon effect
- Arimaa - A game inspired by Kasparov's loss to Deep Blue in 1997.
- ChessBase.com - Chess News - Fritz Defends to Draw Game 8 and the Match! Final Score: 4-4
- Daily Chess Columns-All the News That's Fit to Mock. 3) Anti-computer chess. from chessbase.com
- Chess Life, Special Summer Issue 1997.
- How Much Longer Can Man Match the Computer? - The Fall of Man from chesscafe.com
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