D80: Gruenfeld, Stockholm variation

D80 Sub-variants:

• Gruenfeld defence
  1. d4 Nf6 2. c4 g6 3. Nc3 d5
• Gruenfeld, Spike gambit
  1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. g4
• Gruenfeld, Stockholm variation
  1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bg5
• Gruenfeld, Lundin variation
  1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bg5 Ne4 5. Nxe4 dxe4 6. Qd2 c5