Magnus won the second pawn, but at the cost of allowing a dangerous infiltration by the black queen.
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... d7d5  4. b1c3  4... c7c5  5. e2e3  5... b8c6  6. c4d5  6... e6d5  7. f1b5  7... c5d4  8. e3d4 This capture would be unthinkable for many players of the past, but Magnus Carlsen made his skills in symmetrical position into a great success. 8... f8d6  9. e1g1  9... e8g8  10. h2h3  10... h7h6 No pins anymore. What's next $2 11. f1e1  11... c8f5  12. f3e5  12... a8c8  13. c1f4  13... f8e8  14. a1c1  14... d8b6  15. b5c6 Magnus likes to get his hands on a structural weakness, but there are too many pieces left on the board for White to be comfortable with his plan of pressure on the c-file. 15... b7c6  16. c3a4  16... b6a6  17. e1e3  17... f6e4  18. f2f3  18... e4g5  19. e3c3  19... a6b7  20. f4h2  20... g5e6 White has already passed the point of no return. His d4-pawn is weak. 21. e5c6 At least, Carlsen's play is consistent. 21... e6f4  22. c6e5 Now White is more or less OK. 22... d6e5  23. d4e5  23... f4d3  24. c3c8  24... e8c8  25. c1c8  25... b7c8  26. h2g3  26... d5d4 Still, he gets very little joy out of his extra pawn. That stray Na4 represents a particular problem for White. 27. b2b3  27... c8c6  28. d1d2  28... g8h7  29. g1h2  29... f5g6  30. d2a5  30... c6c1 