Queen's Gambit Declined Marshall Defense Puzzle (Rated 1213): Win Material — Tactical Refutation

This middlegame puzzle is a classic example of a tactical refutation where active pieces and loose coordination decide the game. White’s king is still in the center, while Black’s queen and bishop create immediate threats against key squares and hanging pieces. The position rewards accurate calculation: first identify the most forcing capture, then follow the forcing replies that simplify into a winning material sequence. The goal is not a flashy attack, but a decisive conversion of activity into material gain.