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This article uses algebraic notation to describe chess moves. The touch-move rule in chess specifies that a player, having the move, who deliberately touches a piece [ a] on the board must move or capture that piece if it is legal to do so. If it is the player's piece that was touched, it must be moved if the piece has a legal move.
The time penalty consists of giving the opponent two minutes extra time in standard chess, [72] or one minute extra time in rapid or blitz. [73] The second stated completed illegal move by the same player results in the loss of the game, [ 72 ] unless the position is such that it is impossible for the opponent to win by any series of legal ...
Racknitz was wrong both about the position of the operator and the dimensions of the automaton. [ 1] The Mechanical Turk, also known as the Automaton Chess Player ( German: Schachtürke, lit. 'chess Turk'; Hungarian: A Török ), or simply The Turk, was a fraudulent chess -playing machine constructed in 1770, which appeared to be able to play a ...
In chess, the threefold repetition rule states that a player may claim a draw if the same position occurs three times during the game. The rule is also known as repetition of position and, in the USCF rules, as triple occurrence of position. [ 1] Two positions are by definition "the same" if the same types of pieces occupy the same squares, the ...
A knight's tour is a sequence of moves of a knight on a chessboard such that the knight visits every square exactly once. If the knight ends on a square that is one knight's move from the beginning square (so that it could tour the board again immediately, following the same path), the tour is closed (or re-entrant); otherwise, it is open. [ 1 ...
Castling is the only move in chess in which two pieces are moved at once. [ 3] Castling with the king's rook is called kingside castling, and castling with the queen's rook is called queenside castling. In both algebraic and descriptive notations, castling kingside is written as 0-0 and castling queenside as 0-0-0.
Double-Move Chess: Similar to Marseillais chess, but with no en passant, check, or checkmate. The objective is to capture the king. By Fred Galvin (1957). [42] Double-Take Chess: Each player, once per game, can make two moves during one of their turns. These two moves cannot be used to place the opponent's king in checkmate.
In chess, en passant describes the capture by a pawn of an enemy pawn on the same rank and an adjacent file that has just made an initial two-square advance. This is an exception or special case in the rules of chess. The capturing pawn moves to the square that the enemy pawn passed over, as if the enemy pawn had advanced only one square. The rule ensures that a pawn cannot use its two-square ...