Four Knights Game Mate In 3 Puzzle (Rated 939): Spot Back Rank Mate — Mate in 3

This puzzle is a classic back rank mate pattern in a middlegame setting. The key idea is that the enemy king is boxed in by its own pawns and pieces, leaving the back rank vulnerable to a forcing queen-and-rook sequence. Even when the position looks materially balanced or slightly better for one side, a hidden tactical shot can override everything. In classical chess, recognizing king safety weaknesses is often more important than counting pieces.