The king and queen mate is a fundamental chess endgame technique that consists of forcing the opposing king to the edge or corner of the board using your king and queen, then delivering checkmate.
It is one of the most basic winning endings in chess, and every player must be able to execute it. The queen alone is not enough: without the king’s support, she cannot safely force the enemy king to the edge without risking stalemate — the situation where the opponent has no legal moves but is not in check, resulting in a draw. Both pieces must cooperate: the enemy king is gradually pushed toward the edge of the board, then cornered for the final checkmate.
In practice, the most reliable approach is to use the queen to cut off the enemy king’s available squares, systematically reducing his space, while the winning king marches forward to tighten the net. With correct technique, checkmate can be forced within roughly twenty moves from any starting position, and far sooner from most practical ones.