Learn How to Spot a Discovered Attack: Decisive Material Gain
This middlegame puzzle from the Semi-Slav Defense shows how a single forcing move can transform pressure into a decisive material gain. White’s attack works because the opponent’s queen is overloaded and the king’s shelter is vulnerable, creating a discovered attack motif with tactical support from a pin and a fork. The key idea is not a random sacrifice, but a forcing sequence that opens lines, exposes the king, and wins the queen’s coordination.