Petrov's Defense Puzzle (Rated 965): Win Material — Discovered Attack

This middlegame puzzle shows a classic tactical refutation where an apparently active queen is actually overextended and vulnerable. The key idea is to use a forcing capture that wins material by exploiting king safety and piece coordination. Once the queen is removed, the position collapses because the opponent’s king and rook become exposed to a direct follow-up. In classical chess, these short combinations often decide the game by turning an attacked piece into a decisive material gain.