Berlin Defense Puzzle (Rated 942): Spot a Skewer — Win Now

A skewer attacks a valuable piece while exposing another target behind it. In this middlegame position, Black’s queen creates a line of pressure against White’s rook and bishop. White has a material advantage, but the rook is vulnerable because it is attacked by a lower-value piece. The key lesson is that active piece coordination can overturn a material deficit when an apparently strong piece is tactically loose.