Learn How to Use an Intermezzo: Tactical Refutation
This middlegame puzzle from the Sicilian Defense shows how a forcing tactical sequence can turn an active-looking position into a decisive material win. White’s queen and bishop appear well placed, but the key idea is that a check and a capture can expose the queen to a direct tactical refutation. In classical chess, these moments often hinge on king safety, loose pieces, and whether an apparently strong attacking move is actually overextended.