Neo Grunfeld Defense Fork Intermediate Puzzle (Rated 838): Use a Fork — Decisive Material Gain

This middlegame puzzle is a classic example of a crushing fork that wins material by forcing the opponent’s king into a bad square. White’s knight jumps into an active outpost with check, and the key idea is that the king’s response is restricted while a major black piece becomes trapped. The position rewards tactical refutation over slow play: when the enemy queen is overextended and pieces are loose, a forcing check can convert activity into a decisive material gain.