1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... d7d5  4. b1c3  4... f8e7  5. c1g5  5... h7h6  6. g5h4  6... e8g8  7. d1c2  7... c7c5  8. d4c5  8... d5c4  9. e2e3  9... b8a6  10. f1c4  10... a6c5  11. e1g1  11... a7a6  12. f1d1  12... d8e8 This has been  seen already and it is once again Dubov who demonstrates excellent  preparation as he uncorks a novelty. 13. c4e2 A tricky move. The  bishop is side-stepping the tempo Black might use with b7-b5 and gets  ready to occupy the long diagonal. 13... b7b6 Nakamura's play remains pretty straightforward which might  well be the reason for his opening choices. 14. b2b4  14... c5d7  15. f3d4 Heading for the c6 square \E0 la Botvinnik. This  cannot be allowed. 15... c8b7  16. c2b2  16... a8c8  17. b4b5 Dubov insists on holding the c6 square. 17... a6a5 No pin allowed. 18. c3a4 White does not want to allow any counterplay for his opponent,  but this move backfires. 18... f6d5  19. h4e7  19... e8e7  20. e2f3  20... d7c5 Once again obvious, logical and  good. 21. a4c5  21... c8c5  22. d4c6 Dubov decided to sacrifice the pawn and try to  equalize at once. 22... b7c6  23. b5c6  23... e7c7 The c6 pawn is doomed. Black wants more than slight edge. 24. a1c1  24... c7c6  25. c1c5  25... c6c5  26. f3d5  26... e6d5  27. d1c1 At least White managed  to get to a piece ratio which often promises good defensive chances. 27... c5d6  28. g2g3 