An entry in the Encyclopedia of Chess Openings (ECO C54), reached after 17 half-moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. O-O Bc5 5. d4 Bxd4 6. Nxd4 Nxd4 7. Bg5 h6 8. Bh4 g5 9. f4.
No further variations branch from this position in our database. To explore neighbouring ideas: