An entry in the Encyclopedia of Chess Openings (ECO C44), reached after 12 half-moves: 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. c3 dxc3 5. Bc4 Nf6 6. Nxc3 Bb4.
No further variations branch from this position in our database. To explore neighbouring ideas: