Blackmar Diemer Gambit Declined Discovered Attack Puzzle (Rated 1232): Spot a Discovered Attack — Mate in 2
This middlegame puzzle shows how a discovered attack can turn a quiet-looking position into a forced finish. Black’s pieces are coordinated around the white king, and the key idea is that one tactical move opens a line for the queen while also creating a direct threat on the back rank. In positions like this, king safety matters more than material count: active pieces, open files, and loose defenders can outweigh equal material and lead to a decisive mating net.