An entry in the Encyclopedia of Chess Openings (ECO D90), reached after 9 half-moves: 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qa4+.
1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qa4+
No further variations branch from this position in our database. To explore neighbouring ideas: