Learn How to Win Material: Tactical Refutation
This middlegame puzzle from the Duras Gambit shows how a single tactical shot can overturn a seemingly balanced position. White has extra material, but the pieces are overloaded and the queen is vulnerable to tactical pressure. The key idea is a tactical refutation: when a pinned piece, a skewer, and a hanging target line up, the side to move can force a decisive material gain and seize the initiative.