An entry in the Encyclopedia of Chess Openings (ECO A00), reached after 7 half-moves: 1. b4 e6 2. Bb2 Nf6 3. b5 d5 4. e3.
1. b4 e6 2. Bb2 Nf6 3. b5 d5 4. e3
No further variations branch from this position in our database. To explore neighbouring ideas: