An entry in the Encyclopedia of Chess Openings (ECO D91), reached after 9 half-moves: 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Bg5.
1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Bg5
No further variations branch from this position in our database. To explore neighbouring ideas: