Blackmar Diemer Gambit Accepted Gunderam Defense Puzzle (Rated 930): Win Material — Fork Tactic
This middlegame puzzle is a classic example of a fork tactic that wins material by forcing the king into a bad square and then taking a key piece. White’s active knight jumps create a direct check while also targeting a trapped heavy piece, so the opponent’s pieces cannot coordinate in time. The position is all about tactical precision: one forcing move improves the attack, and the follow-up converts the advantage into a clean material gain.