Learn How to Back Rank Mate: One-Move Finish
This middlegame puzzle is a classic example of a back rank mate, where the enemy king is boxed in by its own pieces and has no flight squares. The key idea is that a rook can deliver a decisive check when the back rank is weak and the defending pieces cannot intervene in time. Even in a materially rich position, king safety can outweigh everything else when the final rank is vulnerable and a hanging piece creates the tactical entry point.