double check
复数形式
double checks
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双将
a situation where the opponent's king is attacked by two pieces simultaneously, and the king must move because it cannot be protected by capturing one of the attacking pieces
In chess, a double check is a special type of check where two pieces simultaneously deliver a threat to the opponent’s king. This occurs when a piece, such as a knight or a rook, moves to a position where it checks the king, while another piece, often the queen or bishop, also creates a check. Since the king is under threat from two directions at once, the only way to escape is to move the king, as capturing or blocking one of the attacking pieces is not possible. Double checks are powerful tactics because they leave the opponent with fewer defensive options.