Learn How to Mate in 3: Back Rank Mate
This middlegame puzzle is a classic mating net built around king safety, a pinned defender, and a rook sacrifice on the open file. White’s heavy pieces are already active, and the black king is boxed in by its own pieces and pawn cover. The key idea is to force the king into a worse defensive setup, then use the remaining rook to deliver a decisive finish. Patterns like this often appear when a queen and rook coordinate against the back rank.