D16: Queen's Gambit Declined Slav, Smyslov variation

D16 Sub-variants:

• Queen's Gambit Declined Slav accepted, Alapin variation
  1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4
• Queen's Gambit Declined Slav, Smyslov variation
  1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Na6 6. e4 Bg4
• Queen's Gambit Declined Slav, Soultanbeieff variation
  1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 e6
• Queen's Gambit Declined Slav, Steiner variation
  1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bg4