Learn How to Win Material: Ruy Lopez Berlin Defense
This middlegame puzzle comes from the Ruy Lopez Berlin Defense and shows how a tactical capture can turn a stable-looking position into a decisive material gain. White’s pieces are active, but Black has a concrete resource that targets loose pieces and uses the pin on the kingside to create a forcing sequence. The key idea is not a flashy mate, but a clean exchange of pieces that wins material and improves Black’s coordination.