Top programs such as Stockfish have surpassed even world champion caliber players. Most available commercial chess programs and machines can play at super-grandmaster strength (Elo 2700 or more), and take advantage of multi-core and hyperthreaded computer CPU architectures. Performance will vary modestly with processor speed, but sufficient memory to hold a large transposition table (up to several gigabytes or more) is more important to playing strength than processor speed. Hardware requirements for programs are minimal the apps are no larger than a few megabytes on disk, use a few megabytes of memory (but can use much more, if it is available), and any processor 300Mhz or faster is sufficient. Programs run on everything from super-computers to smartphones.
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8.7 The next generation: Neural nets and monte-carlo tree searchĪvailability and playing strength Ĭomputer chess IC bearing the name of developer Frans Morsch (see Mephisto)Ĭhess machines/programs are available in several different forms: stand-alone chess machines (usually a microprocessor running a software chess program, but sometimes as a specialized hardware machine), software programs running on standard PCs, web sites, and apps for mobile devices.8.3 The later software age: full-width search.8.2 Early software age: selective search.4.4 Knowledge versus search (processor speed).4.3.1 Search heuristics and other optimizations.But the field is now considered a scientifically completed paradigm, and playing chess is a mundane computing activity. Ĭomputer chess was once considered the " Drosophila of AI", the edge of knowledge engineering. Nevertheless, solving chess is not currently possible for modern computers due to the game's extremely large number of possible variations. In 2006, Monroe Newborn, Professor of Computer Science at McGill University, declared: "the science has been done". By 2006, programs running on desktop PCs had attained the same capability. Within 40 years, in 1997, chess engines running on super-computers or specialized hardware were capable of defeating even the best human players. The early programs played so poorly that even a beginner could defeat them. The first chess machines capable of playing chess or reduced chess-like games were software programs running on digital computers early in the vacuum tube computer age (1950s). The computational speed of modern computers, capable of processing tens of thousands to hundreds of thousands of nodes or more per second, along with extension and reduction heuristics that narrow the tree to mostly relevant nodes, make such an approach effective. Such trees are typically quite large, thousands to millions of nodes.
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Stockfish, GNU Chess, Fruit, and other free open source applications are available for various platforms.Ĭomputer chess applications, whether implemented in hardware or software, utilize different strategies than humans' to choose their moves: they use heuristic methods to build, search and evaluate trees representing sequences of moves from the current position and attempt to execute the best such sequence during play.
Standalone chess-playing machines are also available. Computer chess provides opportunities for players to practice even in the absence of human opponents, and also provides opportunities for analysis, entertainment and training.Ĭomputer chess applications that play at the level of a chess master or higher are available on hardware from supercomputers to smart phones. Computer chess includes both hardware (dedicated computers) and software capable of playing chess.
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