Learn How to Spot Back Rank Mate: Queen's Gambit Declined
This middlegame puzzle comes from the Queen's Gambit Declined and shows a classic back rank mate pattern. The key idea is that the enemy king is boxed in by its own pieces and pawns, so a rook invasion on the back rank can end the game immediately. Even when material is down, tactical patterns can override static evaluation if the king has no escape squares and the last rank is vulnerable.