D90: Gruenfeld, Three knights variation

D90 Sub-variants:

• Gruenfeld, Three knights variation
  1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3
• Gruenfeld, Schlechter variation
  1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 c6
• Gruenfeld, Three knights variation
  1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7
• Gruenfeld, Flohr variation
  1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qa4+