1. e2e4  1... c7c5  2. g1f3  2... e7e6  3. d2d4  3... c5d4  4. f3d4  4... g8f6  5. b1c3  5... b8c6  6. a2a3 It is amusing  that Caruana tries to deviate from the main theoretical lines as quick as  he can. 6... f8e7 Giri decided to switch to a Scheveningen. 7. c1e3  7... e8g8  8. f1e2  8... d7d6 Black also wants to keep things as complex as  possible. 9. d1d3 A novelty by Caruana. For the time being White does not  choose a side to castle.