Sacrifice Puzzle (Rated 1292): Spot Mate in 2 — Opera Mate
This puzzle is a classic opera mate style finish: a forcing attack where the enemy king is boxed in by its own pieces and the final blow comes from a heavy piece on the back rank. The key idea is not material gain alone, but using king safety to create a mating net. In this middlegame position, White’s active rook and queen coordinate to exploit weak dark squares and a vulnerable king shelter.