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Claude Shannon. The Shannon number, named after the American mathematician Claude Shannon, is a conservative lower bound of the game-tree complexity of chess of 10 120, based on an average of about 10 3 possibilities for a pair of moves consisting of a move for White followed by a move for Black, and a typical game lasting about 40 such pairs of moves.
The Classical Variation of the Scotch Game is a chess opening that begins with the moves: 1. e4 e5. 2. Nf3 Nc6. 3. d4 exd4. 4. Nxd4 Bc5. White has several fifth move options, including 5.Be3, 5.Nxc6, 5.Nb3 and 5.Nf5. This article uses algebraic notation to describe chess moves.
In the center are the two openings included in the volume: 1.d4 Nf6 2.c4 e6; and 1.d4 Nf6 2.c4 g6 without (symbol ┘) an early ...d7–d5. The Encyclopaedia of Chess Openings ( ECO) is a reference work describing the state of opening theory in chess, originally published in five volumes from 1974 to 1979 by the Serbian company Šahovski ...
Chess. Play free chess online against the computer or challenge another player to a multiplayer board game. With rated play, chat, tutorials, and computer opponents from beginner to expert! By ...
Chess annotation symbols. When annotating chess games, commentators frequently use widely recognized annotation symbols. Question marks and exclamation points that denote a move as bad or good are ubiquitous in chess literature. [ 1] Some publications intended for an international audience, such as the Chess Informant, have a wide range of ...
The Barnes Opening (sometimes called Gedult's Opening) is a chess opening where White opens with: . 1. f3. The opening is named after Thomas Wilson Barnes (1825–1874), an English player who had an impressive [1] eight wins over Paul Morphy, including one game where Barnes answered 1.e4 with 1...f6, known as the Barnes Defence.
The Staunton chess set is the standard style of chess pieces, [ 1][ 2] recommended for use in competition since 2022 by FIDE, the international chess governing body. [ 3][ 4] The journalist Nathaniel Cooke is credited with the design on the patent, and they are named after the leading English chess master Howard Staunton, who endorsed it; [ 2 ...
De Firmian is a noted expert on chess openings and in 1990 he revised Modern Chess Openings, 13th edition (MCO-13). In 1999 he wrote the 14th edition of Modern Chess Openings (MCO-14), which, along with Nunn's Chess Openings (NCO), is considered an outstanding single volume opening reference in English.