Learn How to Spot a Mate in 2: Queenside Attack
This middlegame puzzle shows how a queen and bishop can coordinate to trap the enemy king with a fast queenside attack. The key idea is not material gain, but king safety: once the queen invades on the a-file, the defending king runs out of squares and the mating net becomes unavoidable. In classical chess, these patterns often appear when one side has a development lead and the opponent’s pieces are too slow to defend the king.