Learn How to Use an Intermezzo: Tactical Refutation
This middlegame puzzle from the King’s Gambit Declined, Falkbeer Countergambit shows how an intermezzo can turn a seemingly active position into a tactical refutation. White has piece activity and pressure, but the king safety imbalance is the real story: Black’s pieces coordinate against loose targets and an exposed king. The key idea is to notice when a forcing check or capture changes the move order and wins material before the opponent can stabilize.