An entry in the Encyclopedia of Chess Openings (ECO B10), reached after 7 half-moves: 1. e4 c6 2. c4 d5 3. cxd5 cxd5 4. Qb3.
1. e4 c6 2. c4 d5 3. cxd5 cxd5 4. Qb3
No further variations branch from this position in our database. To explore neighbouring ideas: