1. g1f3  1... g8f6  2. e2e3  2... g7g6  3. b2b3 Nakamura is very familiar with this development scheme from his online rapid and blitz games. It doesn't look scary, but the American genius gets an impressive amount of wins out of it. 3... f8g7  4. c1b2  4... c7c5  5. c2c4  5... e8g8  6. f1e2  6... b7b6  7. e1g1  7... c8b7  8. d1c2 8.d4 and 8.Nc3 are more popular choices. 8... b8c6  9. f1d1 I only found one game with this move. The vast majority prefer 9.a3, avoiding the knight jump to b4—the computer, however, criticizes this move. Another possibility is 9.d4, but Black can achieve equality esily. 9... d7d5  10. c4d5 After this move, Black has a good and easy position to play. 10... c6b4  11. c2c1  11... d8d5 This natural move is the first new one. 12. b1c3  12... d5f5  13. d2d4  13... a8c8  14. d4c5  14... b7f3 I don't like this decision. The immediate capture of the c5-pawn is better, either with the queen or the rook. The position is equal in both cases. 15. e2f3  15... b4d3  16. e3e4 [%c_effect e4;square;e4;type;GreatFind;persistent;true] Maybe Mamedyarov missed this move, although I'm not sure he did. Now we go for an endgame that is still equal but not as comfortable as the position he had before. 16... f5f3 The only move. 17. g2f3  17... d3c1  18. a1c1  18... c8c5 [%c_effect c5;square;c5;type;Inaccuracy;persistent;true] After this, White has the advantage. 19. b2a3 [%c_effect a3;square;a3;type;GreatFind;persistent;true] This is the problem. Now White gets the c-file. 19... c5g5  20. g1f1 