Learn How to Win Material: Pin Tactic
This middlegame puzzle comes from the Ponziani Opening and shows how a pin can turn a loose piece into a tactical target. White’s queen and advanced pawn create pressure, but Black has a forcing resource that exploits the alignment of the queen and king. The key idea is that a seemingly active queen can become vulnerable when a bishop or other piece attacks along a diagonal, creating a tactical refutation and a large material swing.