[%c_effect h6;square;h6;type;Mistake;persistent;true] After a defense with so many resources, a blunder decides the game.
1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... g8f6  4. e1g1  4... f6e4  5. f1e1  5... e4d6  6. f3e5  6... f8e7  7. b5f1  7... c6e5  8. e1e5  8... e8g8  9. d2d4  9... e7f6  10. e5e1  10... f8e8  11. c1f4  11... e8e1  12. d1e1  12... f6d4 A dangerous move, which is not the most popular. In exchange for the pawn White gets a superior pawn structure and it will be difficult for Black to finish development. Carlsen has some experience in this position, but all his previous opponents preferred the main move, 12...Ne8. The fact that Carlsen didn't win any of those games says a lot about the solidity of Black's position. 13. f4d6  13... c7d6  14. b1c3  14... d4c3 [%c_effect c3;square;c3;type;Inaccuracy;persistent;true] Black is in trouble now. 15. e1c3 The extra pawn doesn't count for Black—in fact it even hinders the development of the bishop. 15... b7b6  16. c3f3 [%c_effect f3;square;f3;type;GreatFind;persistent;true] 16... a8b8  17. f1c4  17... d8e7  18. c4d5  18... a7a5 [%c_effect a5;square;a5;type;Inaccuracy;persistent;true] This is not good and White's next two moves demonstrate why. 19. a2a4 [%c_effect a4;square;a4;type;GreatFind;persistent;true] 19... c8a6  20. c2c4 [%c_effect c4;square;c4;type;GreatFind;persistent;true] What a sublime technique $1 Carlsen plays prophylactically, restricting the a6-bishop. 20... e7f6 This move is necessary sooner or later as Black has no other plan. The only attempt is to exchange queens and then exchange bishops. 21. f3f6  21... g7f6  22. a1d1  22... g8f8  23. g1f1  23... f8e7  24. f1e2  24... a6b7  25. b2b3 [%c_effect b3;square;b3;type;Inaccuracy;persistent;true] 25... b7c6  26. d1d4 [%c_effect d4;square;d4;type;Inaccuracy;persistent;true] 26... b8g8 [%c_effect g8;square;g8;type;GreatFind;persistent;true] 27. g2g3  27... g8g5 [%c_effect g5;square;g5;type;GreatFind;persistent;true] 28. f2f4  28... g5h5 Black can get a draw now. 29. h2h4  29... c6d5  30. c4d5  30... f6f5 [%c_effect f5;square;f5;type;GreatFind;persistent;true] 31. e2d3 