Dutch Defense Janzen Korchnoi Gambit Puzzle (Rated 1078): Win a Fork — Decisive Advantage
This middlegame puzzle shows how a forcing check can expose loose pieces and create a winning tactical sequence. White’s active queen and rook coordinate against the black king’s position, while Black’s king remains stuck in the center and key defenders are overloaded. The main idea is to use tempo to pull the defending queen away, then capture the hanging piece on the queenside. It’s a classic example of converting activity into material gain.