1. d2d4  1... g8f6  2. c2c4  2... g7g6  3. g1f3  3... f8g7  4. e2e3 This shy move is used by some elite chess players as an Anti-Grunfeld weapon. 4... e8g8  5. f1e2  5... d7d6  6. b1c3  6... b8d7 Nepomniachtchi plays in typical King's Indian style, putting the knight on d7 and then playing e5. It can't be too bad. 7. h2h3 The game will quickly take an original course. I think Keymer's idea was to postpone castling and thus make the e5-e4 advance less pleasant for Black. 7... e7e5  8. b2b4  8... e5d4 A new move. 9. e3d4  9... d6d5 [%c_effect d5;square;d5;type;GreatFind;persistent;true] 10. e1g1 White cannot avoid the isolated pawn structure. 10... d5c4  11. e2c4  11... d7b6  12. c4b3  12... b6d5  13. c3d5  13... f6d5 Black equalized without any problems and, in practice, his position is even a little more comfortable to play. White's opening strategy clearly didn't work. But the situation is not serious either. As is known from modern chess strategy, the isolated pawn is not as bad as was formerly believed. 14. b4b5  14... a7a6  15. b5a6  15... a8a6  16. c1g5  16... d8d6  17. d1d2  17... c8e6  18. f1e1  18... c7c6 Both sides make natural moves, and the game remains balanced for a long time. 19. a1b1  19... a6a8  20. g5h6  20... f8e8  21. h6g7  21... g8g7  22. e1e5  22... h7h6  23. b1e1  23... f7f6 [%c_effect f6;square;f6;type;GreatFind;persistent;true] A curious pawn structure. It's important to remove the rook. 24. e5e4  24... e6f7  25. f3h2  25... e8e4  26. e1e4  26... h6h5 [%c_effect h5;square;h5;type;GreatFind;persistent;true] Restricting the h2-knight and improving the pawn structure. 27. h2f1  27... a8d8  28. d2e1  28... d8d7  29. f1e3  29... d5b6  30. e1c3  30... b6d5  31. c3e1  31... d5c7 Nepomniachtchi needs to win, so he is not interested in repeating moves. 32. b3f7  32... d7f7  33. e3c2 Giving room for the rook in case of f6-f5. 33... f7d7  34. h3h4  34... g7f7  35. e1e3  35... c7e6  36. a2a3  36... e6g7  37. e3b3  37... d6d5  38. b3d3  38... g7e6  39. c2b4  39... d5d6  40. d3b3  40... d7e7  41. b4c2  41... f7f8  42. b3e3  42... e6g7  43. e4e7  43... d6e7 The game is getting closer and closer to a draw. 44. e3g3  44... e7e4  45. g3d6  45... f8f7  46. c2e3  46... e4e7  47. d6b8  47... e7d7  48. a3a4  48... g7e6  49. e3c4  49... f7e7  50. c4a5 White's pieces are active and at this point it was hard to believe that Black could win this endgame. 50... e6d8  51. b8f4  51... d7d6  52. f4e4  52... e7f7  53. e4b1  53... d6c7  54. b1b4  54... c7e7  55. b4b3  55... f7g7  56. b3b6 Keymer probably saw no risk in allowing the check on e1, but 56.Kf1 is safer. 56... e7e1  57. g1h2  57... d8f7 [%c_effect f7;square;f7;type;GreatFind;persistent;true] This move creates practical winning chances. Of course, it's dangerous to abandon the b7-pawn and leave White with a passed pawn, but it's possible to create a mating attack, and now Keymer needs to be careful. 58. a5b7  58... e1f2  59. a4a5 [%c_effect a5;square;a5;type;Mistake;persistent;true] In fact, this is the only serious mistake of the game. In high-level chess, a single mistake can be fatal. 59... f2h4  60. h2g1  60... h4e1  61. g1h2  61... g6g5 [%c_effect g5;square;g5;type;GreatFind;persistent;true] I believe that Keymer didn't see this move and believed that the game would end in perpetual check, but now White is lost. The excellent move played in the game brings the pawn to the attack but, above all, guarantees a refuge for the king on g6. The main plan of attack is Nh6-g4, and White has no defense. 62. b6c7  62... e1h4  63. h2g1  63... h4d4  64. g1f1  64... d4d1  65. f1f2  65... d1d2  66. f2f1  66... g5g4 [%c_effect g4;square;g4;type;GreatFind;persistent;true] The pawn can also help the attack. 67. a5a6  67... d2d3  68. f1f2  68... g7g6  69. c7c6  69... f7e5 The knight finally joins the party. 70. c6c1  70... g4g3  71. f2e1  71... d3e4  72. e1f1  72... e4f5  73. f1g1 