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In chess and similar games, check is a condition that occurs when a player's king is under threat of capture on the opponent's next turn. A king so threatened is said to be in check . A player must get out of check if possible by moving the king to an unattacked square, interposing a piece between the threatening piece and the king, or ...
In chess problems, battery refers to an arrangement of two pieces in line with the enemy king on a rank, file, or diagonal so that if the middle piece moves a discovered check (or a threat other than a check) will be delivered. [28] See also Alekhine's gun. BCF British Chess Federation, the former name of the English Chess Federation. [29] See ...
Checkmate (often shortened to mate) is any game position in chess and other chess-like games in which a player's king is in check (threatened with capture) and there is no possible escape. Checkmating the opponent wins the game. In chess, the king is never actually captured. The player loses as soon as the player's king is checkmated.
The result is a double check: One check is given by the rook, discovered by the capturing pawn's move; the other by the bishop, created by the captured pawn's removal. (The bishop’s check is not a discovered check, as the black pawn is captured and not moved.) Such a check is extremely rare in practical play, but it is sometimes found in ...
A cross-check occurs from time to time in games. It is an essential tactic in winning endgames such as two queens versus one queen, or queen and pawn versus queen, where it is used to stop a series of checks from the opponent and force the exchange of queens.
The attacking piece is captured (not possible when in double check, unless the king captures). If none of the three options are available, the player's king has been checkmated, and the player loses the game. In casual games, when placing the opponent's king in check, it is common to announce "check", but this is not required by the rules of chess.
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In chess, a tactic is a sequence of moves that each makes one or more immediate threats – a check, a material threat, a checkmating sequence threat, or the threat of another tactic – that culminates in the opponent's being unable to respond to all of the threats without making some kind of concession.