1. e2e4  1... c7c5  2. g1f3  2... b8c6  3. f1b5  3... e7e6  4. e1g1  4... c6d4 Another rare line issued by Carlsen. 5. f3d4  5... c5d4  6. c2c3  6... a7a6  7. b5d3  7... f8c5 Black's plan is to hold his pawn on d4 as long as he can. 8. b2b4  8... c5a7  9. b1a3  9... g8e7  10. a3c2  10... d4c3  11. d2c3  11... d8c7  12. c3c4 Now White has no more than a slight advantage. 12... e8g8  13. c1e3  13... a7e3  14. c2e3  14... b7b6  15. a1c1  15... a6a5  16. a2a3  16... a5b4  17. a3b4  17... c8b7  18. d1d2  18... c7f4  19. f1d1  19... f8d8  20. d3b1 Now, it's a real pawn sacrifice, 20... h7h6 but Magnus turned it down. 21. d2d4  21... f4c7 Carlsen's choice forced him to bring his queen back—an accomplishment on Nepo's part. 22. e4e5 