An entry in the Encyclopedia of Chess Openings (ECO A52), reached after 7 half-moves: 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Bf4.
1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Bf4
No further variations branch from this position in our database. To explore neighbouring ideas: