Mate In 2 Puzzle (Rated 1329): Spot Mate in 2 — Back Rank Mate
This puzzle is a classic middlegame mating net where White’s heavy pieces coordinate to trap the king on the back rank. The key idea is not material gain, but forcing the defender into a position where every escape square is covered. In positions like this, a rook invasion can create a decisive discovered attack and leave the king helpless. Patterns like this often appear in classical chess and tactical chess quiz positions.