Learn How to Use an Intermezzo: Crushing Tactic
This middlegame puzzle is a classic intermezzo idea: instead of recapturing or defending in the obvious way, Black inserts a forcing check that changes the whole tactical picture. The king is exposed, key white pieces are loose, and the position is full of hanging targets. That kind of move often wins because it combines tempo with a direct threat, turning a normal-looking exchange into a decisive material gain and tactical refutation.