Grunfeld Defense Opocensky Variation Puzzle (Rated 946): Win Material — Crushing Fork Tactic

This middlegame puzzle is a classic example of a crushing fork that wins material by forcing the king into an awkward response. Black’s active knight jumps into the center with check, creating immediate threats against the white queen and other loose pieces. The key idea is that a forcing move can combine king safety, piece activity, and a hanging piece into one tactical sequence. Even when the position looks balanced materially, tactics can quickly decide the game.