An entry in the Encyclopedia of Chess Openings (ECO D01), reached after 7 half-moves: 1. d4 Nf6 2. Nc3 d5 3. Bg5 Bf5 4. f3.
1. d4 Nf6 2. Nc3 d5 3. Bg5 Bf5 4. f3
No further variations branch from this position in our database. To explore neighbouring ideas: