Learn How to Use an Intermezzo: Tactical Refutation
This middlegame puzzle is a classic tactical refutation built around an intermezzo: instead of recapturing immediately, the stronger side inserts a forcing check that changes the evaluation at once. The key idea is that the opponent’s queen and king are vulnerable, and a hanging piece can be exploited before any normal exchange happens. In practical chess, these moments often decide the game through decisive material gain rather than a direct mating attack.