An entry in the Encyclopedia of Chess Openings (ECO A51), reached after 6 half-moves: 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4.
1. d4 Nf6 2. c4 e5 3. dxe5 Ne4
No further variations branch from this position in our database. To explore neighbouring ideas: