An entry in the Encyclopedia of Chess Openings (ECO A17), reached after 6 half-moves: 1. c4 Nf6 2. Nc3 e6 3. Nf3 Bb4.
1. c4 Nf6 2. Nc3 e6 3. Nf3 Bb4
No further variations branch from this position in our database. To explore neighbouring ideas: