An entry in the Encyclopedia of Chess Openings (ECO C54), reached after 9 half-moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4.
1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4
No further variations branch from this position in our database. To explore neighbouring ideas: