1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... a7a6  4. b5a4  4... g8f6  5. e1g1  5... f8e7  6. b1c3 As far as I know, this is the first time that Carlsen has played this move. It is not as popular as 6.Re1 or 6.d3, but many strong grandmasters have tried it. 6... b7b5  7. a4b3  7... e8g8  8. d2d3  8... c6a5 [%c_effect a5;square;a5;type;Mistake;persistent;true] I wonder whether this is a sacrifice or a blunder. In any case, Black has no compensation for the pawn. 9. f3e5  9... a5b3  10. a2b3  10... b5b4  11. c3e2  11... f8e8  12. e5f3 In the normal lines in which Black sacrifices the e5-pawn, he usually already has well-developed pieces and is playing d5 quickly, something that doesn't happen here. 12... c7c5  13. e2f4  13... d7d6  14. c2c4 [%c_effect c4;square;c4;type;GreatFind;persistent;true] A good way to close the game and bury the d5-break. 14... e7f8  15. h2h3 