Baltic Defense Puzzle (Rated 1474): Win the Queen — Discovered Attack

A discovered attack wins material by moving one piece to uncover an attack from a piece hiding behind it. Here Black's rook screens the queen's diagonal to White's queen, and the combination is built on forcing that rook off the line with check. Every White reply is forced — first blocking, then capturing — while the real threat behind the rook never disappears. The payoff is decisive: Black captures the white queen and converts the middlegame into a winning position.