Ruy Lopez Alapin Defense Puzzle (Rated 1468): Crush Kingside Attack — Pin Sacrifice
This middlegame puzzle is a classic example of a crushing kingside attack built around a pin sacrifice and a forced tactical sequence. Black’s queen activity creates immediate pressure on the white king’s shelter while also exploiting loose pieces and a pinned defender. The key idea is to use forcing moves to drag the enemy queen into a bad trade, then win material by removing the defender and converting the resulting tactical imbalance. It’s a strong example of classical chess calculation.