1. d2d4  1... e7e6  2. c2c4  2... b7b6  3. g1f3  3... c8b7  4. b1c3  4... g8f6  5. a2a3  5... g7g6 In a must-win situation  Vachier-Lagrave makes an original opening choice. 6. d4d5  6... e6d5  7. c4d5  7... f8g7  8. g2g3  8... e8g8 