Learn How to Win Material: Discovered Attack
This puzzle is a classic middlegame tactical refutation from the Englund Gambit, where king safety and piece activity outweigh static material. Black’s attack works because the white king’s shelter is loosened and the queen on d1 is vulnerable to a tactical strike along the open d-file. The key idea is a forcing sacrifice that drags the king into the open, then uses a discovered attack to hit the queen and win decisive material. It is a strong example of how active rooks and a vulnerable king can outweigh a nominal material deficit.