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Openings where Black responds to 1.e4 with a move other than 1...e5 are called Asymmetrical King's Pawn Games or Semi-Open Games. The Encyclopedia of Chess Openings (ECO) classifies all King's Pawn Games into volumes B or C: volume C if the game starts with 1.e4 e6 (the French Defence) or 1.e4 e5; volume B if Black answers 1.e4 with any
In 100 games from the normal starting position, AlphaZero won 25 games as White, won 3 as Black, and drew the remaining 72. [11] In a series of twelve, 100-game matches (of unspecified time or resource constraints) against Stockfish starting from the 12 most popular human openings, AlphaZero won 290, drew 886 and lost 24.
Rapid mobilization is the key. The queen, and to a lesser extent the rooks, are not usually played to a central position until later in the game, when many minor pieces and pawns are no longer present. [8] Control of the center: At the start of the game, it is not clear on which part of the board the pieces will be needed. However, control of ...
White has moved the king's pawn two squares and Black has replied in kind. The result is an Open Game. Other responses to 1.e4 are termed Semi-Open Games or Single King's Pawn Games. When written in lowercase, the term "open game" refers to a chess position where ranks, files and diagonals are open, and tending to more tactical gameplay.
Chess strategy is the aspect of chess play concerned with evaluation of chess positions and setting goals and long-term plans for future play. While evaluating a position strategically, a player must take into account such factors as the relative value of the pieces on the board, pawn structure, king safety, position of pieces, and control of key squares and groups of squares (e.g. diagonals ...
Displacement chess – starting position is slightly altered to negate players' knowledge of openings. Chess960 – variant created by Bobby Fischer, in which the starting position of the pieces on the 1st and 8th ranks are random, resulting in 960 possible starting positions. White and Black starting positions must be mirrored and king must ...
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The king (♔, ♚) is the most important piece in the game of chess. It may move to any adjoining square; it may also perform, in tandem with the rook , a special move called castling . If a player's king is threatened with capture, it is said to be in check , and the player must remove the threat of capture immediately.