1. e2e4  1... c7c5  2. b1c3  2... d7d6  3. g1e2  3... g8f6  4. h2h3  4... e7e5  5. d2d3  5... b8c6  6. g2g4 Andreikin expands on the kingside. His main idea is to remove the  black knight from the defense of the central outpost. 6... f8e7  7. f1g2  7... h7h5 On his turn Vachier-Lagrave challenges White's position before  his opponent consolidates. 8. g4g5  8... f6h7  9. h3h4  9... f7f6  10. c3d5 Playing for the  initiative. 10... f6g5  11. h4g5  11... h7g5  12. e2c3  12... g7g6  13. d5e7  13... d8e7  14. c3d5  14... e7d8  15. f2f4 This was Andreikin's idea.  In return for the pawn he got the bishop pair and now quickly opens the  road for the beasts. 15... g5f7  16. f4f5 Not slowing down. 16... g6f5  17. e4f5  17... c6d4  18. c1e3 Missing a stronger continuation. 18... c8f5  19. e3d4  19... f5g4  20. g2f3 Missing a chance to play for the initiative. 20... c5d4  21. c2c4  21... d4c3 