1. e2e4  1... c7c5  2. g1f3  2... b7b6 Desperately needing to win, Duda chooses an offbeat variation of the Sicilian Defense. 3. d2d4  3... c5d4  4. f3d4  4... c8b7  5. b1c3  5... a7a6 This is like the Najdorf Defense, only ten times worse for Black. 6. c1g5  6... d8c7  7. c3d5 Carlsen goes for the kill. 7... c7e5  8. g5e3  8... e7e6 [%c_effect e6;square;e6;type;Mistake;persistent;true] This loses on the spot. 9. d4f3 [%c_effect f3;square;f3;type;GreatFind;persistent;true] White wins the exchange. 9... e5e4  10. d5c7  10... e8e7  11. c7a8  11... b7a8  12. d1d4 The simplest, forcing a queen exchange. 12... b6b5 [%c_effect b5;square;b5;type;Inaccuracy;persistent;true] 13. a2a4 [%c_effect a4;square;a4;type;Inaccuracy;persistent;true] 13... e4d4  14. f3d4  14... b5b4  15. a4a5 [%c_effect a5;square;a5;type;Inaccuracy;persistent;true] This gives Black time to defend the b4-pawn. 15... g8f6  16. d4b3  16... f6d5  17. e3a7  17... b8c6  18. a7b6  18... g7g5 [%c_effect g5;square;g5;type;GreatFind;persistent;true] 19. f1a6  19... f8g7 Now Black has serious compensation for the exchange. 20. a1a2  20... h8b8 [%c_effect b8;square;b8;type;Mistake;persistent;true] The wrong move order. 21. a6e2 [%c_effect e2;square;e2;type;Mistake;persistent;true] 21... d5b6  22. a5b6  22... c6d4  23. b3d4  23... g7d4  24. e2f3  24... a8f3  25. g2f3  25... b4b3  26. c2b3  26... b8b6 Despite being an exchange down, now it's Black who's pressing. 27. h2h4 [%c_effect h4;square;h4;type;GreatFind;persistent;true] An important rule of thumb is that the defending side should try to exchange pawns in the endgame. 27... h7h6  28. h4g5  28... h6g5  29. e1e2  29... b6b3  30. h1d1 Carlsen surrenders the b-pawn to exchange rooks. 30... d4b6  31. d1d3  31... b3b5  32. b2b3  32... f7f5  33. a2a4  33... b6c5  34. b3b4  34... c5b6  35. d3b3  35... e7f6  36. a4a8 Preparing to pin the bishop with Rb8. 36... b6c5  37. a8a5 Finally forcing the exchange of rooks. 37... b5b4 