1. e2e4  1... e7e5  2. b1c3 Armagedon games give this sensible  do-not-allow-the-Berlin option to White. 2... b8c6  3. g2g3 At the end of  the 1980s, the Russian GM Igor Glek made a name for this variation. The  constant success he had over-the-board with the line helped him make it  into the top 10 players in the world in his prime years. 3... f8c5  4. f1g2  4... g8f6  5. g1e2  5... d7d6  6. d2d3  6... a7a6  7. e1g1  7... c8e6  8. h2h3  8... h7h6 It is not obvious if this prophylaxis is needed. 9. g1h2 Dubov is ready for the key f2-f4 advance. 9... d6d5  10. e4d5  10... f6d5  11. f2f4 In time. 11... e5f4  12. g2d5 A fabulous novelty! It is reminiscent of the capture on d5 in the English opening after which the  black bishop gets trapped in the middle of the board. The trade of the  fianchettoed bishop is always a tough decision to make and players are  usually have very concrete reasons. How much of this did Dubov prepare at  home? 12... e6d5 And a losing mistake at once! 13. e2f4 The bishop is trapped in the middle of the board! 13... c6e7  14. d1h5  14... c7c6  15. c3d5  15... c6d5  16. f4e6 A multiple attack that nets Dubov loads of material. 16... d8d6  17. e6g7 The simplest. 17... e8d7  18. f1f7  18... a8f8  19. c1f4 Winning the queen as well. 19... f8f7  20. f4d6  20... f7f2  21. h2h1  21... c5d6  22. a1e1  22... h8f8  23. h5g4 White is heavily ahead  in material; all he needs is to consolidate his pieces. 23... d7c6  24. g7e6  24... f8f6 