Slav Defense Exchange Variation Intermezzo Puzzle (Rated 924): Crush with an Intermezzo — Decisive Material Gain

This puzzle is a classic middlegame tactical refutation from the Slav Defense Exchange Variation. White’s queen looks active, but the position is built on tactical tension: loose pieces, a vulnerable king zone, and a queen that can be hit with tempo. Black’s best idea is a forcing intermezzo that changes the order of captures and turns the opponent’s activity into a liability. The key lesson is that in classical chess, active-looking pieces can be overextended when they are not properly defended.