Frankenstein Dracula Variation Puzzle (Rated 1254): Spot Pins — Tactic
A discovered attack occurs when one piece moves away from a line, revealing an attack from a queen, rook, or bishop behind it. In this Vienna Game position, White’s active queen and the exposed black king create the conditions for a forcing tactical sequence. The key idea combines check with a newly revealed attack on a valuable target, turning Black’s king safety problems into a decisive advantage despite Black’s temporary material edge.