Learn How to Spot Mate in 1: Queenside Attack
This puzzle is a classic middlegame tactical shot from the Center Game, where activity and king safety outweigh material. White’s king has castled long, and the queenside is full of loose targets and weak squares. In positions like this, a queen invasion on the b-file can be decisive because the king’s escape squares are limited and the back rank is vulnerable. The key lesson is that a seemingly active queen can also become a mating piece when the opponent’s king is boxed in.