Learn How to Exploit a Pin: Discovered Attack
This middlegame puzzle is all about using a pin to create a discovered attack and force a decisive material gain. White’s pieces are tangled: one defender is pinned to the king, another is overloaded, and the queen and rook coordination is vulnerable to a tactical shot. The key idea is to improve the position by attacking with tempo, then open a line so a hidden piece becomes active against the most valuable target.