Polina Shuvalova (Black) Puzzle: Fork — Win the Queen
A knight fork attacks two valuable targets at once, often combining check with an attack on a queen, rook, or bishop. In this middlegame position, White’s knight is under pressure, but its centralized location creates a forcing tactical opportunity. The key idea is to use a check that also attacks the exposed queen. Because the king must respond to check, the queen cannot escape, allowing White to recover from the material deficit through a decisive tactical gain.