A  necessary prophylaxis.
1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... a7a6  4. b5a4  4... g8f6  5. e1g1  5... b7b5  6. a4b3  6... f8c5 At the end  of the past century the Archangelsk became frequent guest of the top  tournaments, mainly thanks to the efforts of Mr. "Fire on board" Shirov. 7. a2a4  7... a8b8  8. c2c3  8... d7d6  9. d2d4  9... c5b6  10. a4b5  10... a6b5  11. b1a3  11... e8g8  12. a3b5  12... c8g4 The  active position of the black pieces and the forcing nature of the play are tempting for any active player. 13. f1e1  13... g4f3  14. g2f3 White on his turn can aslo be satisfied with his  extra pawn and solid center. 14... f6h5  15. g1h1  15... d8f6  16. c1e3 An  interesting choice by White. According to the Megabase, Black did  spectacularly well in this line, never losing a game so far and scoring  six wins! 16... e5d4  17. c3d4  17... b6a5  18. e1g1  18... b8b5  19. b3a4  19... b5b2  20. a4c6  20... a5b6  21. g1g4  21... g7g6 A new and useful move. Dubov intends to  bring the knight back into the game. 22. f3f4 Material is equal and White obviously needs to attack on the  kingside, whereas his opponent will try to keep him busy in the center. 22... b2b4  23. a1a4  23... b4a4  24. d1a4  24... h5g7  25. c6d5 The first moment of the  game in which So finally spends a bit of his time.