An entry in the Encyclopedia of Chess Openings (ECO A17), reached after 9 half-moves: 1. c4 e6 2. Nc3 Nf6 3. Nf3 b6 4. e4 Bb7 5. Bd3.
1. c4 e6 2. Nc3 Nf6 3. Nf3 b6 4. e4 Bb7 5. Bd3
No further variations branch from this position in our database. To explore neighbouring ideas: