Four Knights Game Hanging Piece Puzzle (Rated 1008): Spot Back Rank Mate — One-Move Tactic

This middlegame puzzle is a classic back rank mate pattern: the king is boxed in by its own pawns, and the last rank becomes fatal when a rook can invade with check. The position also features a hanging piece and a pinned pawn, which means the defender’s pieces are overloaded and unable to help. In practical play, these motifs often appear in classical chess when one side’s heavy pieces coordinate on open files.