1. e2e4  1... c7c5  2. g1f3  2... d7d6  3. f1b5  3... b8d7 This is the most combative option against the solid check on b5, a move that Sicilian players generally don't like to see on the board. 4. d2d4  4... c5d4  5. d1d4  5... a7a6  6. b5e2  6... g8f6  7. e1g1  7... e7e6 Just like in his game against Svidler, Korobov is ready to choose the pawn formation with e6, even though it's not the most popular. 8. b1c3  8... d8c7  9. a2a4  9... b7b6 Korobov played all this before in a Titled Tuesday game. Nowadays, studying blitz games has become common practice when working on opening preparation. 10. c1g5  10... c8b7  11. f3d2 [%c_effect d2;square;d2;type;Interesting;persistent;true][%c_arrow d2c4;keyPressed;none;from;d2;opacity;0.8;to;c4;persistent;false][%c_highlight b6;keyPressed;none;opacity;0.8;square;b6;persistent;false,d6;keyPressed;none;opacity;0.8;square;d6;persistent;false] A dangerous plan: the knight is heading to c4, from where it will apply pressure on the pawns on b6 and d6. 11... h7h6 [%c_effect h6;square;h6;type;GreatFind;persistent;true] A novelty and a provocative move. 12. g5f6 [%c_effect f6;square;f6;type;GreatFind;persistent;true] The clearest attempt to refute Black's previous move. 12... d7f6  13. d2c4  13... c7c5 [%c_effect c5;square;c5;type;GreatFind;persistent;true] The only move to justify Black's play. He needs to play a series of forced moves to achieve equality. This is always a little scary unless prepared beforehand. 14. a1d1 There are two important options, but Black is always surviving. 14... c5d4  15. d1d4  15... d6d5 [%c_effect d5;square;d5;type;GreatFind;persistent;true] This is the whole point. 16. e4d5  16... f8c5  17. d4d1  17... e6d5 [%c_effect d5;square;d5;type;GreatFind;persistent;true] 18. e2f3 [%c_effect f3;square;f3;type;Inaccuracy;persistent;true] This is inaccurate since it allows Black to castle queenside. 18... e8c8  19. c4e5  19... h8e8 [%c_effect e8;square;e8;type;GreatFind;persistent;true] The knight is forced back: capturing on f7 leaves the poor piece trapped. 20. e5d3  20... c5d6 Black has other tempting moves. In general, his position is already more comfortable, although the advantage is not substantial yet. 21. c3e2 [%c_effect e2;square;e2;type;GreatFind;persistent;true] 21... f6e4  22. e2d4 With the knight well placed on d4, the position is equal again. 22... c8c7  23. h2h4  23... d6e7  24. g2g3  24... e4c5  25. d3c5 A difficult move to play; after all, it connects Black's pawns, and the structure changes from isolated pawns to hanging pawns. 25... b6c5  26. d4e2  26... g7g5 [%c_effect g5;square;g5;type;GreatFind;persistent;true] Restricting the knight and creating chances on the kingside. 27. h4g5  27... h6g5 