Preparing to attack the a-pawn again. To protect it, Black should double rooks on the a-file, but this time both 37...Ra7 and 37...Ra6 have tactical problems.
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... d7d5  4. g2g3  4... d5c4  5. f1g2  5... c7c5  6. e1g1  6... b8c6  7. d4c5 A solid choice for White, leading to a risk-free endgame with a minimal advantage. 7... d8d1  8. f1d1  8... f8c5  9. b1d2  9... c4c3 Before giving the pawn back, Black spoils White's pawn structure a little bit. All this is already well-established by opening theory. 10. b2c3  10... e8g8  11. f3e1 An interesting move, much less played than 11.Nb3. 11... c8d7 Arjun was probably surprised by White's last move since he responded with an inaccuracy. It's important to keep the pawn on b7 defended for now. Both 11...Rd8 and 11...Be7 are better. 12. a1b1 It's not easy for Black to protect the b7-pawn. The problem is that b7-b6 is tactically refuted due to the loose placement of the bishop on d7. 12... c6a5  13. d2b3 Forcing the exchange of knights, after which the pawn structure is improved. 13... a5b3  14. a2b3  14... d7c6  15. g2c6  15... b7c6  16. e1d3 The opening is a success for White, with a comfortable advantage in a risk-free position. 16... c5e7 A new move. 17. c1e3  17... f8c8  18. e3c5  18... g8f8  19. b1a1  19... c8c7  20. g1f1  20... f6d7  21. c5e7  21... f8e7  22. a1a3  22... c6c5  23. c3c4  23... c7b7  24. d1a1 White's plan is to bring the king to c2, freeing the rook to attack the pawn on c5. 24... a7a5 The best defense. 25. f1e1  25... e7d6  26. d3c1 An interesting maneuver to improve the knight. 26... b7a7  27. c1a2  27... d6c6  28. a2c3 The knight is well placed on this square, decreasing the strength of a5-a4, and planning to land on b5. 28... d7b6  29. f2f4 White's idea is logical—to gain space in the center and on the kingside. He follows the old strategy of the \"principle of two weaknesses,\" so well explained in the classic book \"Endgame Strategy\" by renowned author Mikhail Shereshevsky, and also by Mark Dvoretsky in several of his books. It's impossible to win just by attacking the weakness on a6—creating another attacking front is necessary. That said, advancing the pawn to f4 is not the best way to do it. It would be better to start with 29.g4 or 29.h4, reducing the potential of a defensive resource  Black can exploit on the next move. 29... b6c8  30. c3b5  30... a7a6  31. a1d1  31... c8b6  32. a3a2 Praggnanandhaa ignores the potential threat of a5-a4. Should Black go for it $2 32... a8f8 Too passive $1 This is uncharacteristic of Arjun, who usually looks for active options. 33. d1d6  33... c6b7  34. b5c3 Black has no active plan. 34... a6a8  35. a2d2  35... f8c8  36. d2a2  36... c8f8 Repeating moves, but of course, Praggnanandhaa isn't interested in a draw.