Learn How to Back Rank Mate: Mate in 2
This puzzle is a classic back rank mate idea in a middlegame setting. The key is that the enemy king has very little room, while its own pieces and pawns restrict escape squares. When that happens, a forcing queen move can create a direct check that leaves the defender with only one reply. The hidden point is that the response is not a true defense at all, but a move that walks into a final rook finish on the back rank.