Learn How to Spot Mate in 2: Pin Tactic
This puzzle comes from the Queen's Gambit Accepted, Central Variation, and shows how a strong middlegame attack can turn a material edge into a forced finish. White’s pieces are active, the rook is already on an open file, and Black’s king is exposed enough that a single forcing move can create a mating net. The key idea is that a pin can freeze a defender, making a check far more dangerous than it first appears.