Queens Gambit Declined Janowski Variation Puzzle (Rated 896): Win Material — Crushing Fork

This middlegame puzzle shows a classic crushing fork pattern from the Queen's Gambit Declined. White’s knight jumps into a tactical outpost with check, forcing the black king to respond while simultaneously attacking a major piece. The key idea is that a forcing move can turn an active knight into a material-winning weapon, especially when the opponent’s king is still in the center and their pieces are awkwardly placed. The result is a decisive gain in material and position.