Sicilian Defense Marshall Gambit Puzzle (Rated 805): Win Material — Fork Tactic

This puzzle shows a classic middlegame tactic in the Sicilian Defense where active pieces and loose coordination create a decisive material gain. Black’s pressure on the center and queenside exposes a pinned knight and an overloaded queen, allowing a forcing sequence that wins material by combining check, capture, and a fork. The key idea is not a flashy attack on the king, but a clean tactical refutation that leaves White down significant material and with poor piece coordination.