Ruy Lopez Marshall Attack Puzzle (Rated 1435): Win Material — Discovered Attack

This middlegame puzzle is built around a classic discovered attack: one forcing move opens a line so a hidden attacker can strike with tempo. The key idea is that the opponent’s king-side structure and loose pieces are vulnerable at the same time, so the tactic is not just about checking the king, but about winning material through coordination. In positions like this, forcing moves often create a direct tactical sequence that leaves the defender unable to keep everything protected.