Blackmar Diemer Gambit Accepted Discovered Check in Chess

In the Blackmar-Diemer Gambit Accepted, White has offered a pawn and Black has taken it, typically after 1.d4 d5 2.e4 dxe4. The “discovered check” motif here means White arranges a piece line so that a move (often by a pawn or piece) reveals an attack on the black king while simultaneously creating a check—turning the accepted gambit into a tactical threat.