1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. b1c3  3... f8b4  4. d1c2  4... e8g8  5. a2a3  5... b4c3  6. c2c3  6... d7d5  7. g1f3  7... d5c4  8. c3c4  8... b7b6  9. h2h4  9... c8a6  10. c4c2  10... c7c5  11. d4c5  11... b6c5  12. h1h3 A novelty. The rook  enters the battle via the third rank, whereas the white king is OK to  castle by hand. 12... b8c6  13. c1g5  13... c6d4  14. f3d4  14... c5d4  15. a1d1  15... e6e5  16. h3f3  16... a6b7  17. g5f6  17... g7f6  18. f3g3  18... g8h8  19. e2e3  19... d8e7 Black's pawn structure has been  demolished, but White's king is not safe enough, and this obstructs Ding  in developing his advantage. 20. e3d4  20... e5d4  21. f1e2  21... b7e4  22. c2d2  22... d4d3 Nakamura is looking for clarification. 23. e2d3  23... e4d3  24. g3e3  24... e7b7  25. d2d3  25... b7g2  26. d3d4 The major-piece endgame  is obviously more pleasant for White, but it is again his king's safety  that obstructs him. 26... g2g1  27. e1e2 