1. e2e4  1... e7e5  2. g1f3  2... d7d6 Almost a novelty for the world champion. This is only  the second time he has used the Philidor defense. 3. d2d4  3... e5d4  4. f3d4  4... g8f6  5. b1c3  5... f8e7  6. c1f4 Dominguez chooses the most principled line. 6... e8g8  7. d1d2  7... c7c6  8. e1c1 Who is faster? This is the main question in this line. White has the advantage of the extra move, but Black can  advance his queenside pawns with tempos. 8... b7b5  9. f2f3  9... b5b4  10. c3b1  10... a7a5  11. g2g4  11... a5a4  12. h2h4  12... c6c5 Faster and faster. And a novelty. 13. d4f5  13... c8f5  14. g4f5 The first lengthy thought by the American  grandmaster (almost five minutes). At the end, he decided to open up the  g-file for his major pieces. 14... b8c6  15. h4h5  15... c6d4 Carlsen does not touch the queenside pawns for the time  being. 16. d2g2  16... g8h8  17. f4e3 A sluggish move after which Black manages to build a  solid kingside block. 17... h7h6  18. f1d3  18... f6d7  19. h1g1  19... e7f6 Just in time. The bishop is  perfect on the long diagonal, and since the white pawns are fixed, Carlsen enjoys one-sided play. 20. f3f4  20... f8e8  21. e3d4  21... c5d4  22. b1d2  22... d7c5  23. d2c4  23... b4b3  24. c1b1  24... b3c2 The stronger capture that undermines the  white bishop. 25. d3c2  25... a8b8 Carlsen plays the most natural moves, but here he had an  even better continuation. 26. c2d3  26... b8b4  27. a2a3  27... b4b3  28. d3c2  28... b3b8  29. e4e5 A sigh of relief for White. It is not  only the material that he gains, but rather the chance to solidify his  position that matters. 29... d6e5  30. f4e5  30... e8e5  31. c4e5  31... f6e5  32. c2d3  The black pawn (and bishop) need to be locked for good. 32... e5f6  33. g2c2  33... d8a5  34. g1g2  34... c5d3  35. c2d3  35... a5d5 Despite the extra  exchange, White is still not out of the woods. His king is never going to  be safe enough, and if the long diagonal for the black bishop is ever  opened, Black may crush the opponent. 36. g2e2 As strange as it looks,  this is not the right square for the rook. 36... h8h7  37. d3e4 Completing his idea, and... losing the game outright. 37... b8b2 The second chance Carlsen does not miss. 38. b1b2  38... d4d3  The bishop is more valuable than the rook! 39. b2c1  39... d5c5  40. c1d2  40... c5c2  41. d2e1 