Russian Game Puzzle (Rated 988): Fork — Win Material

A fork is a tactical move that attacks two or more targets at once, often combining a check with an attack on a valuable piece. In this middlegame, White is materially behind because the black queen has invaded the kingside and created serious threats. The key idea is to use piece activity and forcing play to turn the opponent’s aggressive queen placement into a liability. A well-timed knight fork forces the king to respond while leaving the queen exposed, producing a decisive material gain.