1. e2e4  1... d7d6  2. d2d4  2... f7f5 This is not a popular option, of course. Advancing the f-pawn is one of the worst things Black can do in a defense against the king's pawn opening. But, surprisingly, it's not as bad as it looks. Let's not forget this is a rapid game—some liberties are allowed. 3. e4f5  3... c8f5  4. f1d3  4... d8d7  5. g1f3  5... g8f6  6. d3f5  6... d7f5  7. e1g1  7... b8c6  8. c2c3 Too timid. 8... e7e5 A new move. 9. d4e5  9... d6e5 Black has a good position now. In exchange for an isolated pawn, he has good piece development. 10. f1e1  10... f8d6  11. h2h3 [%c_effect h3;square;h3;type;Mistake;persistent;true] This is too slow. White should control the e4-square as soon as possible. 11... e8c8  12. d1e2  12... e5e4 [%c_effect e4;square;e4;type;GreatFind;persistent;true] Suddenly, Black has a considerable advantage, as the pawn has ceased to be a weakness and has become a strength. 13. f3h2  13... c6e5  14. c1e3  14... e5d3  15. e1d1  15... h7h5 [%c_effect h5;square;h5;type;GreatFind;persistent;true] Restricting the knight and preparing the decisive pawn march. 16. b1a3  16... g7g5 Other moves are also good: 17. a3c4  17... d6h2  18. g1h2  18... g5g4  19. h3h4  19... f6d5  20. h2g1  20... a7a6 A sign that Nakamura lost a bit of momentum in carrying out the initiative. But Black's position is still much better. 21. d1d2  21... h8g8  22. a1d1  22... g4g3 [%c_effect g3;square;g3;type;Mistake;persistent;true] The right idea, but the wrong execution. 23. f2f3  23... f5f6 [%c_effect f6;square;f6;type;Mistake;persistent;true] A rare oversight by Nakamura. 24. e3g5  24... g8g5  25. h4g5  25... f6g5  26. e2e4  26... d3f4 The American genius probably calculated this far and expected victory, but White has a defense. 27. c4e3 [%c_effect e3;square;e3;type;GreatFind;persistent;true] The knight heads to f1, defending against the black queen's invasion. The game is decided. 27... g5h4  28. e3f1  28... c7c6  29. c3c4 Gaining more material. 29... d8d7  30. c4d5  30... d7e7  31. e4f5 