Blackmar Diemer Gambit Accepted Sacrifice Intermediate Puzzle (Rated 1181): Spot a Mate in 2 — Kingside Attack

This middlegame puzzle is a classic kingside attack where White’s active pieces coordinate against the enemy king’s shelter. The key idea is to use a forcing check that drags a defender away and opens the h-file for a direct finish. Positions like this often look materially balanced or even worse for the attacker, but king safety overrides everything. When the opponent’s king is boxed in and the dark squares around it are weak, a short tactical sequence can end the game immediately.