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 