Learn How to Win Material: Discovered Attack
This middlegame puzzle is a classic example of a tactical refutation built around king safety and piece coordination. White’s queen and minor pieces are active, but one loose piece and an exposed king create a target-rich position. Black can use a forcing check to pull the white queen into a vulnerable square, then exploit the discovered attack on the line behind it. The key idea is that a checking move can also uncover a stronger threat, turning defense into a decisive material gain.