An entry in the Encyclopedia of Chess Openings (ECO E08), reached after 17 half-moves: 1. d4 e6 2. c4 Nf6 3. Nf3 d5 4. g3 Be7 5. Bg2 O-O 6. O-O Nbd7 7. Qc2 c6 8. Rd1 b6 9. a4.
No further variations branch from this position in our database. To explore neighbouring ideas: