Bishop's Opening Berlin Defense Puzzle (Rated 1072): Exploit a Pin — Discovered Attack
This middlegame puzzle shows how a pin can turn into a discovered attack and a winning tactical refutation. White’s queen is active, but the king position is loose and several pieces are overloaded. Black can use a forcing check to drag a defender away, then follow up by attacking the queen and key kingside squares. The idea is not a flashy mating net, but a clean tactical sequence that wins material and leaves Black clearly better.