Blackmar-Diemer Gambit Declined: Elbert Countergambit

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 e5

ECO D00

The Blackmar-Diemer Gambit Declined: Elbert Countergambit is a chess opening reached after 1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 e5, catalogued under code D00 in the Encyclopaedia of Chess Openings (ECO).

The defining move e5 is chosen by Black on move 4.

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• Catalan Opening
• King's Indian Defense with ...e5

Every chess term used here is defined in the chess terms glossary. Browse all opening courses or the full ECO code index.