Learn How to Mate in 2: Back Rank Mate
This puzzle is a classic forcing attack built around king safety and the power of the rook on an open file. In the middlegame, the defending king is boxed in by its own pieces and pawns, which makes a direct check especially dangerous. When a rook can invade the back rank, the opponent often has only one practical reply. The key idea is that the first check forces a capture or block, and the follow-up finishes the mating net.