An entry in the Encyclopedia of Chess Openings (ECO D40), reached after 14 half-moves: 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c5 5. e3 Nc6 6. Bd3 Bd6 7. O-O O-O.
No further variations branch from this position in our database. To explore neighbouring ideas: