1. d2d4  1... d7d5  2. c2c4  2... e7e6  3. g2g3  3... g8f6  4. f1g2  4... f8e7  5. g1f3  5... e8g8  6. e1g1  6... d5c4 One of the oldest and most solid lines against the Catalan. 7. d1c2  7... a7a6 The main move. 8. a2a4  8... b8c6 Also a modern idea. 9. b1a3 This move, played after a prolonged thought, is obviously an over-the-board novelty. Unfortunately for Mammadzada, the combination of the moves Qd1-c2 and Nb1-a3 does not work well. 9... b7b5 [%c_effect b5;square;b5;type;GreatFind;persistent;true] Zatonskih had spent almost an hour on the clock but found the best continuation. Or rather, refutation $1 The pawn cannot be regained now. 10. f3e5  10... c6b4  11. c2d1  11... a8b8  12. a4b5  12... a6b5 Black not only keeps the extra pawn but is ready to trade her problematic light-squared bishop. 13. b2b3 Funny, it is now White who struggles to trade as many pawns on the queenside as she can (check Nakamura's game from above.) 13... c4b3  14. c1b2  14... c8b7  15. d1b3  15... b7g2  16. g1g2  16... b8b6 Zatonskih is carefully preparing the advance of her c-pawn. Right now she is taking the c6-point under control. 17. f1c1  17... f6d7  18. e5f3  18... d8b8  19. a3b1 [%c_effect b1;square;b1;type;GreatFind;persistent;true] White needs to use every single resource that she has to gain survival chances. The knight needs to be moved to a better position. 19... b4d5  20. b1d2  20... c7c5  21. d4c5  21... d7c5 Black frees her position and is a solid pawn ahead. 22. b3c2  22... b6b7  23. e2e4  23... d5b6  24. b2e5  24... b8d8  25. d2b3  25... b6c4  26. c1d1  26... d8c8  27. e5d4 Better is to trade the other knight. 27... c5b3  28. c2b3  28... e7c5 Trading the annoying bishop is a sound plan. The only problem is that Black is getting closer to a major-piece endgame and not all of those would be won for her. 29. a1c1  29... c8c6  30. b3c3 Alas, Mammadzada misses a nice tactical shot. 30... c5d4  31. c3d4  31... c6b6 Time trouble is here, and both players have to be extremely careful. 32. d4b6  32... b7b6  33. f3d4 This is the first moment when White has a chance to activate her rooks. 33... h7h6  34. d1e1  34... f8b8  35. e1e2  35... c4e5  36. f2f4  36... b8d8  37. d4b5 Removing the queenside pawns. It is always easier to defend on the side only. 37... b6b5  38. f4e5  38... b5e5  39. c1e1 The time deficit prevented Mammadzada from finding her best chance. 39... g7g5 [%c_effect g5;square;g5;type;Brilliant;persistent;true] Zatonskih is in time trouble too but knows her job well $1 This move not only secures the powerful position of the rook on the e5-spot, but it also prepares the further kingside attack. 40. e2f2  40... d8d4  41. e1f1  41... d4d7  42. f1e1  42... g8g7  43. f2e2  43... d7d4  44. g2f3  44... d4a4  45. f3g2 