It is White's turn to make an useful semi-waiting, semi-improving move. The king sidesteps the possible checks along the a7-g1 diagonal.
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... d7d5  4. b1c3  4... b8d7  5. c4d5  5... e6d5  6. c1g5  6... c7c6 A classic Carlsbad structure is reached. 7. e2e3  7... f8e7  8. f1d3  8... h7h6  9. g5h4  9... e8g8  10. e1g1  10... f6e4 And a classic freeing maneuver in this line. 11. h4e7  11... d8e7  12. d1c2  12... f8e8  13. a1b1 Ju is preparing to play the most common plan in this structure, the minority attack. 13... d7f6  14. f3e5 But then White suddenly changes course. 14... c8f5 Shuvalova solves the problem of her \"bad\" bishop, and the game is levelled. 15. f1e1  15... g7g6 A novelty, but it looks like an imprecision. 16. f2f3 Ju gains ground in the center. 16... e4c3  17. b2c3  17... f5d3  18. c2d3  18... a8b8  19. e3e4 White follows her plan. 19... e7c7 Strong play by Shuvalova $1 Black does not open any files for the opponent's rooks. Instead, she intends to regroup nicely, and only then open up the center but in more favorable conditions for her. 20. g2g3  20... g8g7 Another strong prophylactic move $1