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Staunton style chess pieces. Left to right: king, rook, queen, pawn, knight, bishop. The rules of chess (also known as the laws of chess) govern the play of the game of chess. Chess is a two-player abstract strategy board game. Each player controls sixteen pieces of six types on a chessboard. Each type of piece moves in a distinct way.
It was the first decisive classical game in a World Chess Championship in more than five years, ending the longest-ever streak of 19 draws in consecutive World Chess Championship classical games, [121] and the 136-move game became the longest in the history of the World Chess Championship. [122]
Transpositions are common in chess – a given position can often be reached by different move orders – even move orders with more or fewer moves. The table may also provide percentage of games won by white for each variation, based on the results of the games considered in creating the table.
The first commercial chess database, a collection of chess games searchable by move and position, was introduced by the German company ChessBase in 1987. [citation needed] Databases containing millions of chess games have since had a profound effect on opening theory and other areas of chess research.
move to sidebar hide. ... The gambits are organized into sections by the parent chess opening ... B15 – 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.f3 [64] English Opening ...
In the semi-open games White plays 1.e4 and Black breaks symmetry immediately by replying with a move other than 1...e5. The most popular Black defense to 1.e4 is the Sicilian (1...c5), but the French (1...e6, normally followed by 2.d4 d5) and the Caro–Kann (1...c6, normally followed by 2.d4 d5) are also very popular.
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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.