Blackmar Diemer Gambit Accepted Double Check in Chess

In the Blackmar-Diemer Gambit Accepted, White sacrifices a pawn (typically after 1.d4 d5 2.e4 dxe4) and then aims for tactics. The “accepted double check” motif occurs when White’s attacking sequence delivers check twice in one move (or forces two checks in rapid succession), usually by combining a piece move with a discovered/line-opening attack on the king.