Learn How to Win a Rook: Discovered Attack
This middlegame puzzle from the Ruy Lopez Berlin Defense shows how a single forcing move can transform pressure into a decisive material gain. White’s rook activity on the d-file creates a tactical overload: the black queen is tied to defense, the king is still in the center, and several pieces are vulnerable to a discovered attack. When the position is open and the enemy king lacks coordination, forcing checks often expose hidden tactical resources and win material quickly.