Sacrifice Puzzle (Rated 1408): Spot a Mate in 4 — Queen Sacrifice

This chess puzzle is a classic example of a forcing mating attack in the middlegame/endgame transition. Black’s queen sacrifice is the key idea: it drags the white king’s defenders away and opens lines for the rook to join the attack. The position shows how king safety can outweigh material, especially when the enemy king has limited escape squares and pieces are overloaded. In classical chess, these patterns often decide the game immediately.