An entry in the Encyclopedia of Chess Openings (ECO E14), reached after 7 half-moves: 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3.
1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3
No further variations branch from this position in our database. To explore neighbouring ideas: