Black To Move Puzzle (Rated 1250): Win Material — Tactical Refutation

This middlegame puzzle is a classic tactical refutation built around a pinned knight, overloaded defenders, and a hanging queen. White’s pieces look active, but the coordination is fragile: one forcing check creates a sequence that wins material by exploiting the king’s exposed position and the defender’s overload. The key idea is not a mating attack, but a clean conversion of tactical pressure into a decisive material gain.