An entry in the Encyclopedia of Chess Openings (ECO D30), reached after 9 half-moves: 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 e6 5. Nbd2.
1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 e6 5. Nbd2
No further variations branch from this position in our database. To explore neighbouring ideas: