1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1c4 The evergreen Italian. 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 the players  actually had an earlier discussion in the line. 10... c6e7  11. d3d4  11... e5d4  12. c3d4  12... c5b6  13. f1g3  13... d6d5  14. e4e5  14... f6e4 Now the game resembles the Ruy Lopez.  Carlsen deviates from their earlier game with... 15. b5d3 ...which is the right diagonal for his bishop. 15... e4g3 