B21: Sicilian, Andreaschek gambit

B21 Sub-variants:

• Sicilian, Grand Prix attack
  1. e4 c5 2. f4
• Sicilian, Smith-Morra gambit
  1. e4 c5 2. d4
• Sicilian, Andreaschek gambit
  1. e4 c5 2. d4 cxd4 3. Nf3 e5 4. c3
• Sicilian, Smith-Morra gambit, 2...cxd4 3.c3
  1. e4 c5 2. d4 cxd4 3. c3
• Sicilian, Smith-Morra gambit, Chicago defence
  1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 d6 6. Bc4 e6 7. O-O a6 8. Qe2 b5 9. Bb3 Ra7