Learn How to Spot a Mate in 2: Queen Sacrifice
This middlegame puzzle comes from the Four Knights Game and shows how a queen sacrifice can force a mating net when the enemy king is underdeveloped and the pawn shield is weakened. White’s advanced passed pawn and active queen create immediate threats against the king, while Black’s pieces are poorly coordinated. The key idea is not material, but forcing moves that exploit king safety and remove the defender of the final mating square.