Ruy Lopez Cozio Defense Discovered Attack Puzzle (Rated 1161): Win Material — Discovered Attack

This middlegame puzzle is a classic example of how active rooks can create a decisive tactical swing. White’s rook is ideally placed to attack along the d-file, where it can hit both the enemy queen and bishop while also exposing the king to check. The key idea is a discovered attack: one move forces the opponent’s king to respond, and that tempo lets White win material immediately after. The position rewards calculation, not long maneuvering.