1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1c4  3... f8c5  4. c2c3  4... g8f6  5. d2d4 A good, old classical line that So analyzed extensively for an online course. 5... e5d4  6. e4e5  6... d7d5  7. c4b5  7... f6e4  8. c3d4  8... c5b6  9. b1c3  9... e8g8  10. c1e3  10... c8g4 The pawn structure now is  very much like the one in the Yates line of the Ruy Lopez. White has a  strong center, but Black's free piece play allows him a chance to  eventually attack and destroy the center. 11. h2h3  11... g4h5  12. d1c2  12... h5g6  13. c2b3 The attack against the d5-point helps So relieve the pressure  against his d4-pawn. 13... c6e7  14. e1g1  14... c7c6  15. b5d3 The bishop  belongs to this diagonal. 15... e7f5  16. b3c2 There it is, the pressure  along the b1-h7 diagonal. It forces Carlsen to swap a few pieces. 16... e4c3  17. b2c3  17... f5e3 