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  38. b3b4  38... c5b4 How to evaluate this endgame $2 Black has two pawns for the exchange, and they will soon start moving, but the rook puts up a good fight. In the comfort of my office, enjoying the air conditioning, a cup of coffee, and with the engine on, I can see it's a draw. But this is far from easy to prove with little time on the clock, as we're about to see. 39. a5a7  39... d7d6  40. a7d7  40... b4c5  41. d7h7  41... f6e5  42. h7g7  42... e5f4  43. g7g6  43... e6e5  44. g6g8  44... c5d4  45. g8d8  45... d4c5  46. d8a8  46... g5g4  47. a8a4  47... c5d4  48. f3g4  48... f4g4 Clearly the best chance. The pawns should remain united. 49. f2f3  49... g4f4  50. a4a8  50... e5e4  51. f3e4  51... f5e4 We have arrived at the most interesting part of this game. I can't understand why some chess players don't enjoy studying the endgame. So many treasures can be found in positions with only a few pieces left. 52. a8f8  52... f4e5  53. f8e8  53... e5d5  54. e2d2  54... d4c5  55. d2e2  55... d5d4 White can't stop the pawns from advancing until a certain point. 56. e8a8  56... d6d5  57. a8a4  57... d4e5  58. a4a5  58... c5b6  59. a5b5  59... b6g1  60. b5b1  60... g1c5  61. b1h1  61... d5d4  62. h1h5  62... e5d6  63. h5f5  63... c5b4  64. f5h5  64... d6e6  65. h5b5  65... b4d6  66. b5h5  66... d6f4  67. h5h3  67... e6d5  68. h3h5  68... d5e6  69. h5h3 For now, Carlsen manages to stop the advance of the pawns, but Duda keeps maneuvering. 69... e6d6  70. h3a3  70... d6c5  71. a3a5  71... c5b4  72. a5d5 [%c_effect d5;square;d5;type;Mistake;persistent;true] This move allows the decisive advance of the d-pawn.