Giri decided to switch to a Scheveningen.
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.