Now Black is paralyzed. He tries a last chance.
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... d7d5  4. c1g5  4... h7h6  5. g5h4 In a must-win situation Nakamura chooses a relatively rare approach. 5... d5c4  6. e2e3  6... c7c5  7. f1c4  7... c5d4  8. e3d4 Now a standart IQP appeared, with the white bishop already committed to the h4 square. 8... f8e7  9. e1g1  9... e8g8  10. b1c3 [#] 10... b7b6 This might be a bit slow. 11. d1e2 That is the difference. The pawn on d4 is not hanging and White can arrange his pieces in the most optimal way. 11... c8b7  12. a1d1 Very obvious and natural. 12... b8d7 Already a bit awkward. 13. f1e1  13... a8c8 A blunder! From here on, Mamedyarov's loss can be named after the e8 square! 14. d4d5 Right! Whenever this break works in the IQP, this spells trouble for the defender. Here his position simply falls apart. 14... e6d5 The lesser evil. 15. e2e7  15... d8e7  16. e1e7  16... d5c4  17. h4f6 Energetic play by Nakamura. 17... b7f3  18. d1d7  18... f3c6  19. f6h4 Alas, in blitz it is easy to miss stuff. Even if you are Nakamura! 19... c6d7  20. e7d7  20... g7g5 Now things are not that clear. 21. h4g3  21... f8d8  22. d7a7  22... d8d2  23. h2h4  23... d2b2  24. h4h5 A strong blitz move! White creats mating net, always a nasty thing when low on time. 24... b2d2  25. f2f3  25... d2d3  26. g3e5  26... c8e8  27. e5f6  27... g8f8 