Queens Pawn Game London System Intermediate Puzzle (Rated 978): Win a Queen's Pawn Game Fork — Decisive Material Gain

This middlegame puzzle comes from a Queen's Pawn Game London System structure where activity and king safety matter more than raw material count. Black has a forcing tactical idea that begins with a check and uses the exposed white king to create a discovered attack on the bishop. The key motif is a tactical fork-like sequence: the checking move drags a defender into a bad square, and the follow-up wins a major piece. In classical chess, these short combinations often decide the game immediately.