An entry in the Encyclopedia of Chess Openings (ECO A36), reached after 8 half-moves: 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nc3 Nc6.
1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nc3 Nc6
No further variations branch from this position in our database. To explore neighbouring ideas: