Blackmar Diemer Gambit Declined Discovered Attack Intermediate Puzzle (Rated 1581): Spot Mate in 2 — Discovered Attack

This middlegame puzzle is a classic example of a discovered attack turning into a forced mating net. White’s active knight and queen coordinate against the black king’s defenses, while the queenside structure leaves key lines vulnerable. The first tactical idea is a forcing check that drags a defender away and opens the path for the decisive follow-up. It is a strong example of how piece activity can outweigh material when the enemy king is boxed in.