Kalashnikov Variation Puzzle (Rated 1252): Win Material — Pin Tactic
This middlegame puzzle shows how a single forcing check can expose a loose king and turn active pieces into a decisive material gain. The key idea is a pin on the kingside that limits the defender’s options and creates a tactical refutation of the opponent’s setup. Once the king is forced into a safer-looking square, the follow-up wins a central piece because the pinned structure cannot coordinate in time. It is a classic example of converting activity into material.