An entry in the Encyclopedia of Chess Openings (ECO D04), reached after 8 half-moves: 1. d4 d5 2. Nf3 Nf6 3. e3 g6 4. Bd3 Bg7.
1. d4 d5 2. Nf3 Nf6 3. e3 g6 4. Bd3 Bg7
No further variations branch from this position in our database. To explore neighbouring ideas: