Sacrifice Puzzle (Rated 1369): Spot Back Rank Mate — Mate in 3

This chess endgame-style tactical puzzle is really a classic back rank mate pattern disguised by material imbalance. White’s queen and rook coordinate to overload the defender and create a mating net around the enemy king. The key idea is forcing checks that limit the king’s escape squares, then using a sacrifice to remove the last defender. In classical chess, these motifs often appear when heavy pieces dominate open files and the king is boxed in by its own pieces.