King's Gambit Declined Queen's Knight Defense Puzzle (Rated 963): Win a Fork — Decisive Material Gain
This middlegame puzzle comes from the King's Gambit Declined and shows how a well-timed fork can turn active piece placement into decisive material gain. Black’s knight jump creates a forcing check that pulls the white king into an awkward square while simultaneously attacking key pieces. The idea is not a random tactic: it is built on piece activity, loose coordination, and the fact that White’s queen and minor pieces are vulnerable to a tactical sequence.