Blackmar Diemer Gambit Declined Fork Intermediate Puzzle (Rated 842): Win Material — Fork Tactic

This middlegame puzzle is built around a forcing tactical idea: a knight jump that creates a check while also attacking key pieces. The position features loose coordination in the enemy camp, an exposed king, and several hanging pieces that make the tactic work. White’s active pieces are already aimed at the king zone, so the best move is not a slow improvement but a direct tactical strike that wins material and keeps the initiative.