Learn How to Win a Fork: Decisive Material Gain
This puzzle comes from the Queen's Gambit Declined Exchange Variation and shows how a well-timed knight fork can decide the game by winning material. Black’s pieces are active, White’s king is still in the center, and the white rook on a1 becomes vulnerable once the tactical sequence begins. The key idea is to use a forcing check that also attacks a major piece, creating a classic advantage fork in the opening and middlegame transition.