From here on Caruana will mercilessly improve his  queenside position until he wins material.
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g2g3  3... d7d5  4. f1g2 A good opening choice. The dry Catalan can fight the immense creativity of the Polish GM. 4... f8e7  5. g1f3  5... e8g8  6. e1g1  6... d5c4  7. d1a4  7... c7c6  8. a4c4  8... b7b5  9. c4b3  9... c8b7  10. f1d1  10... b8d7  11. f3e5  11... d7e5  12. d4e5  12... f6d7  13. c1f4  13... d8c7  14. b1c3  14... d7c5 Duda does not want to follow the footsteps of other players. 15. b3c2  15... b5b4 A very committal move. Pawns are not moving back, and the  exposed b4 one will soon become a headache for Black. 16. c3b1  16... b7a6 In order to prevent the normal development after Nb1-d2, but  this is easily fixed by 17. g2f3  17... a8c8  18. a2a3  18... c8b8 Now the game opens in  White's favor. 19. a3b4  19... b8b4 