context: 1. g1f3  1... g8f6  2. g2g3  2... d7d5  3. f1g2  3... c7c5  4. e1g1  4... b8c6  5. d2d4  5... e7e6  6. c2c4  6... d5c4  7. d1a4  7... c8d7  8. d4c5  8... f8c5  9. a4c4 A well-known position that can arise from several move orders. 9... c5e7  10. b1c3  10... e8g8  11. e2e4  11... a8c8  12. c4e2  12... e7c5 A precise move, played just once before. Giri played it quickly, so he certainly knew the position well. 13. c1g5 A novelty. Gukesh thought for about 35 minutes before playing it. 13... h7h6  14. g5h4 A bold and surprising move, although objectively not correct. It's very brave on Gukesh's part to go for complications, sacrificing a piece instead of trying to force a draw after being outprepared in the opening. 14... g7g5 Giri correctly accepts the challenge. 15. f3g5  15... h6g5  16. h4g5  16... e6e5 Stopping e4-e5. 17. e2d2  17... c5e7 Removing the annoying pin. 18. g5h6 Getting back some of the material invested. 18... g8h7  19. h6f8  19... e7f8  20. f2f4  20... d7e6  21. c3d5  21... c6b4  22. f4e5  22... f6g4  23. a1d1  23... h7h8 Defending against Nf6+. 24. g1h1 This move loses. 24... c8c2  25. d2f4 By this point, Gukesh was down to seconds on the clock. 25... b4d5  26. f4f3 The best practical chance. 26... d8b6  27. e4d5  27... c2f2  28. f3c3  28... f8b4  29. c3c1  29... e6f5  30. c1g5 The queen suddenly becomes very active. 30... b4f8 Preparing Bg6. More direct moves lead only to a draw. 31. g5h4 Both players had only seconds, and mistakes are inevitable. 31... f8h6  32. d1e1  32... b6b2  33. h2h3  33... f5e4 A brilliant winning move. 34. f1f2  34... g4f2  35. h1g1  35... b2b6 Sadly for Giri, all his great previous play is thrown away with this move. 36. h4f6 The simplest, but 36.Kh2 and 36.Bxe4 win as well. 36... b6f6  37. e5f6 