Learn How to Spot a Mate in 1: Back Rank Mate
This puzzle is a classic chess endgame-style tactical finish, even though the board still has many pieces left. The key idea is a back rank mate: the enemy king is boxed in by its own pieces and pawns, so one forcing queen move ends the game immediately. In classical chess, these patterns often appear when a king has no flight squares and the back rank is overloaded or blocked.