Alapin-Diemer Gambit - AbsoluteAstronomy.com

The Alapin-Diemer Gambit is a variation of the Diemer-Duhm Gambit

Diemer-Duhm Gambit

The Diemer-Duhm Gambit is a variation of the French Defense and is characterized by the movesThe opening is named after the German master Emil Josef Diemer and the German-Swiss master Andreas Duhm....

declined and is characterized by the moves

1. d4 d5

2. e4 e6

3. Be3

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