Learn How to Win a Pin: Tactical Refutation
This Vienna Game middlegame puzzle is built around a powerful pin that turns a seemingly active queen into a tactical target. White’s pieces look coordinated and the center is well controlled, but Black has a forcing resource that exploits the alignment of the queen, bishop, and king. The key idea is not a flashy attack, but a clean tactical refutation that wins material by using pressure on an overloaded piece and the exposed king line.