An entry in the Encyclopedia of Chess Openings (ECO E61), reached after 9 half-moves: 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 d6 5. Bg5.
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 d6 5. Bg5
No further variations branch from this position in our database. To explore neighbouring ideas: