White is the one to use the open file.
1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1c4 The Italian enjoys another peak of popularity  nowadays. 3... f8c5  4. e1g1  4... g8f6  5. d2d3  5... d7d6  6. c2c3  6... h7h6  7. f1e1  7... e8g8  8. b1d2  8... a7a5  9. d2f1  9... c8e6  10. c4b5 All of this is very popular nowadays, and  both players actually have a lot of experience in the line. 10... c6e7  11. d3d4  11... c5a7  12. f1g3  12... e7g6  13. h2h3 White's center is impressive, and he has the better  chances. 13... c7c6  14. b5d3  14... a5a4  15. c1e3  15... f8e8  16. d1c2  16... b7b5  17. b2b4 A good novelty. So wants to fix the queenside that is Black's territory and then  shift to the kingside. 17... a4b3 An a serious inaccuracy in return. Carlsen wants to generate counterplay along the a-file and possibly swap the rooks there, but fails  short by a critical tempo. 18. a2b3  18... d8c7 