Learn How to Use an Intermezzo: Tactical Refutation

This puzzle shows a classic opening tactic where an in-between move changes the evaluation immediately. Instead of recapturing or defending in the obvious way, Black uses a forcing check to expose the white queen and win the initiative. The key idea is that a loose queen in the center can become a tactical target when it is tied to another piece and the opponent has a forcing resource. In classical chess, these tactical refutations often decide the opening on the spot.