1. d2d4  1... g7g6 A fact: nowadays, the decisive games often see some irregular  opening choices. The Pirc/Modern defenses are notorious for that. Some  examples that come to my mind are Ivanchuk-Kramnik, FIDE Candidates'  London 2013 and Karpov-Kortschnoi, Baguio City 1978. 2. g1f3  2... f8g7  3. e2e4  Shifting to the Modern/Pirc. 3... d7d6  4. f1c4  4... e7e6 Keeping it as original  as possible. 5. e1g1  5... g8e7  6. a2a4  6... b8d7 Spassky used a similar set-up in his first match against  Petrosian in order to avoid the theoretical lines. Later, however, he  admitted it was a mistake and he went for the main lines in their second  match in 1969. 7. c2c3  7... a7a5  8. f1e1  8... b7b6  9. b1a3  9... h7h6  10. c4d3 Solid and new. 10... c8b7  11. a3c4  11... e8g8  12. d1e2 Centralization and prophylaxis. 12... e6e5 Objectively speaking, a mistake. But such final games have their own  laws and we are not in the position to criticise any of the players'  decisions. 13. d4e5  13... d6e5  14. b2b3 It turns out that Black's position is very  unpleasant. f7-f5 is impossible, there are no outposts for the black  knights. And the rooks are not comfortable as the queen stays on their  road. 14... d8b8  15. c1a3  15... c7c5 Leads to a permanent of the d5 square. But what else could Tan do? 16. a1d1  16... f8d8  17. a3c1 The bishop has done its job, time to change the  operating diagonal. From here it pressurizes the kingside and makes sure  there will be no black bishop out soon. 17... b7c6  18. d3c2 Ju is consistently playing on the d-file and the  queenside. 18... b8c7  19. c4a3  19... g6g5 And the world champion decides to  risk! However: 20. h2h4 Is an excellent counter-strike. White is better prepared for the kingside play. 20... g5g4  21. f3h2  21... h6h5  22. f2f3  22... g4f3  23. e2f3 Black's attack backfired. She loses a  pawn. 23... e7g6  24. c1g5  24... f7f6  25. f3h5  25... d7f8  26. g5e3  26... c6e8  27. h5g4 Ju won a pawn and kept a huge positional advantage. Essentially this should be curtains, but Tan once again  demonstrates her incredible fighting spirit and does not give up. 27... e8d7  28. g4h5  28... d7e6  29. a3b5  29... c7e7  30. h2g4  30... d8d1  31. e1d1  31... a8d8  32. d1d8 Another  demonstration of the word solidity. There will be no random chaances  allowed! 32... e7d8  33. g4h6  33... g7h6  34. e3h6  34... e6f7  35. h5g4  35... f7e6  36. g4g3  36... g8h7  37. h6e3  37... d8d7  38. g3f2  38... d7e7  39. g2g3  39... e6g4  40. f2d2  40... f8e6  41. g1h2  41... e6g7  42. b5d6  42... e7d7  43. d6c4  43... d7f7  44. c4d6 Solidity makes World  Champion! 44... f7g8  45. d2f2  45... g8d8  46. f2d2  46... g7h5  47. d6f5  47... d8g8  48. d2d5  48... g8f8  49. e3h6  49... f8e8  50. d5b7  50... h7g8  51. f5g7 SOLIDITY. 51... e8e7 Forced. 52. b7e7  52... g6e7  53. g7h5 The crown is within her reach. 53... g4h5  54. h2g2  54... g8f7  55. g2f2  55... e7c8  56. h6d2  56... c8d6  57. b3b4 Now a pawn is traded. 57... f7e7  58. b4a5  58... b6a5  59. d2e3  59... d6b7  60. c2b3  60... e7d6  61. b3c4  61... b7d8  62. c4e2  62... h5e8  63. e2d1  63... e8g6  64. f2f3  64... d8e6  65. g3g4  65... g6f7  66. d1c2  66... d6c6  67. f3g3 