1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. b1c3  3... f8b4  4. f2f3 "A sharp line that is also very risky for White. I have never played this before." (Caruana) 4... d7d5  5. a2a3  5... b4e7  6. e2e4  6... d5e4  7. f3e4  7... c7c5  8. d4d5  8... e6d5  9. e4d5  9... e8g8  10. f1e2  10... f8e8  11. g1f3  11... c8g4 "An extremely decent plan for Black." (Caruana) 12. e1g1  12... b8d7  13. d5d6 A sharp move and a  novelty. White wants to immediately profit from his space advantage. 13... e7f8  14. h2h3  14... g4h5  15. c3b5  15... e8e6 "This move looked unusual to me as I  want to bring my bishop to f4. It's very sharp and concrete so even  unusual moves might not be bad." (Caruana) 16. c1f4  16... a7a6  17. b5c7  17... e6e4 This was Alekseenko's point. Now the white pieces are  hanging, and he may get a chance to go for Re4-d4 after the trade on f3. 18. f4h2  18... a8c8 This also seems like an inaccuracy. 19. g2g4 Now a forcing sequence follows. 19... h5g4  20. h3g4  20... f6g4  21. e2d3  21... g4h2  22. d3e4  22... h2f1  23. d1f1 "It was a comfortable situation for me. I had a lot of time, my position is kind of good and very safe."(Caruana) Furthermore, the American GM underlined the importance of the d5 outpost for his  advantage.