Queens Gambit Declined Marshall Defense Beginner Puzzle (Rated 1058): Win the Queen — Pin Tactic

This puzzle shows a classic middlegame pin tactic in the Queen's Gambit Declined, Marshall Defense. White’s pieces are coordinated to exploit the fact that Black’s queen is overworked and exposed on the same line as the king. The key idea is not a flashy sacrifice, but a forcing move that creates a strong pin and leaves a major piece tactically vulnerable. Once the pressure is increased, the position collapses into a winning material sequence.