An entry in the Encyclopedia of Chess Openings (ECO C37), reached after 9 half-moves: 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. d4 g4 5. Nc3.
1. e4 e5 2. f4 exf4 3. Nf3 g5 4. d4 g4 5. Nc3
No further variations branch from this position in our database. To explore neighbouring ideas: