Berlin Defense Puzzle (Rated 830): Win Material — Skewer
This Ruy Lopez Berlin Defense middlegame features a classic skewer and hanging-piece tactic. White’s queen is attacked by a bishop, but the apparent problem hides a tactical opportunity: moving the queen exposes an attack from a second bishop onto the first. Because the attacking bishop cannot safely remain on its square, White can exchange queens or win material while preserving a decisive advantage. The key idea is to calculate beyond the immediate threat.