Learn How to Spot Mate in 1: Queen Sacrifice
This middlegame puzzle comes from the Alekhine Defense and shows how a seemingly ordinary attacking position can hide a forced finish. White’s pieces are coordinated around the enemy king, and the queen has access to a critical checking square that cannot be met by a legal defense. The key idea is to notice when the king is boxed in by its own pieces and pawns, making a direct mating move possible even in a material imbalance.