Blackmar-Diemer Gambit

An entry in the Encyclopedia of Chess Openings (ECO D00), reached after 3 half-moves: 1. d4 d5 2. e4.

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2…dxe4 16 lines

About this opening

Blackmar-Diemer Gambit is an opening in the Encyclopedia of Chess Openings, classified under code D00. ECO group D (D00–D99) covers closed games and semi-closed games beginning 1.d4 d5, covering the Queen's Gambit, Slav, Grünfeld and related queen-pawn structures. This particular variation is reached after 3 half-moves from the starting position, with the move sequence 1. d4 d5 2. e4.

The opening sequence in prose form: 1.d4 d5, 2.e4. From this position exactly one named continuation is recorded in the encyclopaedia.