1. e2e4  1... e7e5  2. g1f3  2... g8f6 This should not come as surprise as Wang has the  Petroff in his repertoire. 3. f3e5  3... d7d6  4. e5f3  4... f6e4  5. d2d4 This is not  Nepomniachtchi's most common way to fight the Petrov, but his statistic in this line are quite good. 5... d6d5  6. f1d3  6... c8f5  7. e1g1  7... f8e7  8. f1e1  8... e8g8  9. b1d2 A trendy line, in which Nepomniachtchi has a little something  home-brewed. 9... e4d6  10. d2f1  10... f5d3  11. d1d3  11... c7c6  12. c1f4  12... b8a6  13. h2h4 As we have seen from  above, a favorite idea of Nepomniachtchi. White is gaining space on the  kingside and can eventually exploit the g5 handle to force some kingside  concessions. 13... a6c7  14. f3g5  14... e7g5  15. f4g5  15... f7f6 Not the best reaction according to Nepomniachtchi as  afterwards the white knight can go quickly to f5 with an advantage. 16. g5f4  16... d8d7 An important move in an attempt to control the h3-c8 diagonal.  17. f1g3  17... a8e8  18. f4d6  18... d7d6  19. g3f5  19... d6d7  20. d3h3 Apparently, Nepomniachtchi was still in his analysis. 20... g8h8  21. h4h5 