Stonewall Attack Puzzle (Rated 1285): Win Material — Fork
This opening puzzle demonstrates how an apparently active attacking piece can become vulnerable to a tactical refutation. Black’s bishop has entered deep into White’s position, attacking valuable targets while Black’s king remains uncastled. The key idea is to use a forcing check to exploit the bishop’s lack of safe retreat squares. Once the defender is displaced, a discovered attack allows White to recover material and emerge with a decisive advantage despite initially being down material.