Learn How to Refute: Tactical Refutation
This middlegame puzzle comes from the Englund Gambit and shows a classic tactical refutation built on king safety and loose pieces. White has a strong-looking setup, but Black can exploit the exposed king and the alignment of the queen, rook, and bishop to win material decisively. The key idea is to recognize when a kingside attack is not just aggressive, but also supported by a discovered attack and a skewer on the back line.