Petrovs Defense Cozio Attack Puzzle (Rated 1421): Win Material — Tactical Refutation

This middlegame position is a classic example of a tactical refutation in a long advantage battle. White has active pieces, but Black can exploit the loose queen and the overloaded back rank with a forcing sequence that wins material. The key idea is to look for a capture that opens a file, creates a check, and forces the opponent into a trade that leaves one side with a decisive material edge. In classical chess, these moments often decide the game.