1. d2d4  1... g8f6  2. g1f3  2... d7d5  3. e2e3  3... c7c6  4. c2c4  4... e7e6  5. b1c3  5... b8d7  6. d1c2  6... f8d6  7. f1d3  7... d5c4  8. d3c4  8... e8g8  9. e1g1  9... b7b5 Shankland was very successful with this concrete,  double-edged line against Ding Liren last year. But his choice is peculiar as one other top player who enjoys playing this as Black is... Korobov! 10. c4e2  10... c8b7  11. e3e4  11... e6e5  12. d4e5  12... d7e5  13. f3h4 White needs the opponent's knight in the center to gain tempos for his central pawns to advance. 13... g7g6  14. f2f4  14... e5g4 But Black also enjoys owing the knight. The position is  extremely sharp. If Black does not demonstrate enough activity with his  pieces, he will get blown away by the white central pawn pair. 15. g2g3  Cementing the position. 15... d6c5  16. g1h1  16... b5b4  17. c3d1  17... c5d4  18. e2f3  18... c6c5 The most logical move turns out to be a novelty. 19. e4e5  19... f6d5  20. c2g2 Korobov wants to push back the black pieces in the  most comfortable way, but this turns out to be too slow. 20... d8d7  21. h2h3  21... h7h5 Perfect play! Shankland wants the long diagonal  for his bishop, and he needs it now. 22. h3g4  22... h5g4  23. f3e4  23... f7f5  24. e5f6  24... a8e8 The point behind the sacrifice. The powerful threat Rxe4 cannot be stopped without losses. 25. h1h2  The only chance. Korobov clears the diagonal. 25... f8f6  26. d1f2 Once again, the only chance. 26... g6g5 A beautiful way to get to the white defenders. 27. f4g5  27... f6f2  28. f1f2  28... d4f2  29. g2f2  29... e8e4  30. c1d2 Black has regained his material  and has a moment to use his temporary advantage in piece activity. 30... d7e6 An obvious move, and a pity. 31. a1e1 Phew! Without the major pieces White holds. 31... e4e1  32. f2e1  32... e6e1  33. d2e1  33... c5c4  34. h4f5  34... c4c3  35. b2c3  35... b4c3  36. f5h6  36... g8h7  37. h6g4  37... h7g6  38. g4f2  38... b7a6  39. f2h3 White keeps the pawn for the time being.