An entry in the Encyclopedia of Chess Openings (ECO D45), reached after 10 half-moves: 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 a6.
1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 a6
No further variations branch from this position in our database. To explore neighbouring ideas: