(game) a player's turn to take some action permitted by the rules of the game

a board game for two players who move their 16 pieces according to specific rules; the object is to checkmate the opponent's king

interchanging the positions of the king and a rook

the removal of an opponent's piece from the chess board

(chess) a direct attack on an opponent's king

a chess move constituting an inescapable and indefensible attack on the opponent's king

a chess move early in the game in which the player sacrifices minor pieces in order to obtain an advantageous position

a board game for two players who move their 16 pieces according to specific rules; the object is to checkmate the opponent's king