Sicilian Defense Kopec System Puzzle (Rated 1270): Win Material — Tactical Refutation

This middlegame puzzle is all about tactical refutation: one active capture creates a forcing sequence that wins material and leaves White clearly better. The key idea is that a loose piece becomes vulnerable when it is tied to another target, so the opponent cannot simply recapture without dropping more. In positions like this, the strongest move is often a forcing one that improves your piece activity while exposing hidden weaknesses in the enemy camp.