An entry in the Encyclopedia of Chess Openings (ECO B04), reached after 13 half-moves: 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 g6 5. Bc4 Nb6 6. Bb3 Bg7 7. a4.
No further variations branch from this position in our database. To explore neighbouring ideas: