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Lichess (/ ˈ l iː tʃ ɛ s /; LEE-ches) [3] [4] is a free and open-source Internet chess server run by a non-profit organization of the same name. Users of the site can play online chess anonymously and optionally register an account to play rated games .
Chess software comes in different forms. A chess playing program provides a graphical chessboard on which one can play a chess game against a computer. Such programs are available for personal computers, video game consoles, smartphones/tablet computers or mainframes/supercomputers.
1995 – Fritz 3, running on a 90 Mhz Pentium PC, beats Deep Thought-2 dedicated chess machine, and programs running on several super-computers, to win the 8th World Computer Chess Championships in Hong Kong. This marks the first time a chess program running on commodity hardware defeats specialized chess machines and massive super-computers ...
Lichess Stockfish, a version for playing variants without fairy pieces. [ 19 ] Crystal, which seeks to address common issues with chess engines such as positional or tactical blindness due to over reductions or over pruning, draw blindness due to the move horizon and displayed principal variation reliability.
Chess.com is an internet chess server and social networking website. [3] One of the largest chess platforms in the world, [4] the site has a freemium model in which some features are available for free, and others are available for accounts with subscriptions.
The meaning of the term "chess engine" has evolved over time. In 1986, Linda and Tony Scherzer entered their program Bebe into the 4th World Computer Chess Championship, running it on "Chess Engine," their brand name for the chess computer hardware [2] made, and marketed by their company Sys-10, Inc. [3] By 1990 the developers of Deep Blue, Feng-hsiung Hsu and Murray Campbell, were writing of ...
PGN is structured "for easy reading and writing by human users and for easy parsing and generation by computer programs."The chess moves themselves are given in algebraic chess notation using English initials for the pieces.
Though the four-player "bughouse" chess became prominent in western chess circles in the 1960s, the crazyhouse variant did not rise to prominence until the era of 1990s online chess servers, though it may be traced back further to the "Mad Mate" variant made in 1972 by Alex Randolph, a Bohemian-American game designer who moved to Japan and became an amateur dan-level Shogi player.