👉 In the context of chess, a checkmate is a situation where one player has captured all their pieces in a single move. In other words, a player is unable to make any moves that would allow them to capture another piece from the opponent's side. A checkmate occurs when both players are on the board and have no more time to play their next move. This means that either player must have checked out of the game or be forced to surrender in order to win the match. The term