A71: Various Openings

• Benoni Defense: Classical Variation, Averbakh-Grivas Attack
  1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. e4 Bg7 8. Bg5