An entry in the Encyclopedia of Chess Openings (ECO A45), reached after 9 half-moves: 1. d4 Nf6 2. g4 Nxg4 3. e4 d6 4. Be2 Nf6 5. Nc3.
1. d4 Nf6 2. g4 Nxg4 3. e4 d6 4. Be2 Nf6 5. Nc3
No further variations branch from this position in our database. To explore neighbouring ideas: