Learn How to Spot Mate in 1: Back Rank Mate
This middlegame puzzle is a classic example of a forcing tactical finish: the side to move has an immediate checkmate because the enemy king is boxed in by its own pieces and weak squares around it. Even with material considerations in the background, the decisive factor is king safety. When a queen can invade the first rank, the opponent’s lack of luft and passive defenders often turns a strong position into a finished game at once.