Learn How to Use an Intermezzo: Queenside Attack
This middlegame puzzle shows how a forcing check can act as an intermezzo and completely change the evaluation. White’s attack is not about slow buildup; it is about using the opponent’s loose pieces and king placement to win material with tempo. The key idea is that a checking move can pull the king onto a vulnerable square, after which a second tactical strike lands on an undefended target. That is the essence of a crushing tactical refutation.