Learn How to Win a Queen: Pin Tactic
This puzzle is a classic opening tactical refutation from the Petrov's Defense, where the key idea is an absolute pin on the queen. White’s queen is active, but it is also vulnerable because the king is still in the center and the pieces are not fully coordinated. Black uses a forcing move to create a direct threat against the queen while also exploiting the exposed king, turning a seemingly active position into a decisive material win.