Modern Defense Mongredien Defense Puzzle (Rated 1295): Win With a Crushing Fork — Middlegame Tactics

This middlegame puzzle shows how a single forcing queen move can turn active piece placement into a decisive material gain. White’s queen invades with check, exploiting the exposed black king and the loose coordination of Black’s pieces. The key idea is not just the check itself, but the way it creates a fork on the next move, forcing the king into a passive square while leaving another valuable piece undefended. In practical classical chess, these are the moments where activity outweighs static material.