Blackmar-Diemer Gambit: Lemberger Countergambit

1.d4 d5 2.e4 dxe4 3.Nc3 e5

ECO D00

The Blackmar-Diemer Gambit: Lemberger Countergambit is a chess opening line in the Blackmar-Diemer Gambit complex, reached after 1.d4 d5 2.e4 dxe4 3.Nc3 e5.

It is catalogued under code D00 in the Encyclopaedia of Chess Openings (ECO).

The defining move e5 is chosen by Black on move 3.

5 named continuations branch from this position, including the Endgame Variation and the Lange Gambit.

The Blackmar-Diemer Gambit: Lemberger Countergambit is a line of the Blackmar-Diemer Gambit. The Blackmar-Diemer Gambit is a chess opening that begins 1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3. Read the complete Blackmar-Diemer Gambit guide: what it is, how to reach it, its main variations, how to play against it, and its history.

Named variations

• Blackmar-Diemer Gambit: Lemberger Countergambit, Endgame Variation — ECO D00
• Blackmar-Diemer Gambit: Lemberger Countergambit, Lange Gambit — ECO D00
• Blackmar-Diemer Gambit: Lemberger Countergambit, Rasmussen Attack — ECO D00
• Blackmar-Diemer Gambit: Lemberger Countergambit, Sneiders Attack — ECO D00
• Blackmar-Diemer Gambit: Lemberger Countergambit, Soller Attack — ECO D00

More ECO D00 openings

• Amazon Attack — 1.d4
• Blackmar-Diemer Gambit Accepted — 1.d4
• Blackmar-Diemer Gambit Declined: Brombacher Countergambit — 1.d4
• Blackmar-Diemer Gambit Declined: Elbert Countergambit — 1.d4
• Blackmar-Diemer Gambit Declined: Gedult Defense — 1.d4
• Blackmar-Diemer Gambit Declined: Lamb Defense — 1.d4

Do you want to learn openings?

Start with a GM-authored repertoire you study move by move, then practice against a human-like AI opponent:

• 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.