Finally castling. Grischuk considered this a  provocation and decided to go all in.
1. e2e4  1... e7e6 Grischuk is sticking to his French strategy for this leg of the  Candidates. 2. d2d4  2... d7d5  3. b1c3  3... g8f6  4. e4e5  4... f6d7  5. c3e2  5... c7c5  6. c2c3  6... b8c6  7. f2f4  7... f8e7  8. g1f3  8... f7f6 Immediately challenging the center. 9. c1e3 \"I prepared something else, but for some reason played this.\"  (Wang) 9... e8g8  10. g2g3  10... d8b6  11. d1d2 Grischuk said that he knew that  this is not a very good move. But it is ambitious as White wants to hold  on to his huge center and squeeze his opponent later on. This was the  reason for the hour that he took on the clock now. 72 minutes to be  precise. 11... c5d4 A logical novelty. White's set-up is ambitious but  shaky. Black needs to attack before the opponent manages to consolidate  and castle. 12. f3d4  12... d7c5 The invested time demanded that Black speeds up a bit, and  this is not optimal. 13. e5f6  13... e7f6  14. d4b3  14... c5e4 Very active and aggressive play. Black is ready to part with  the exchange. 15. d2d3  15... b6c7  16. f1g2  16... e4d6  17. e3f2 Preserving the important dark-squared bishop. 17... d6c4  18. d3c2  18... c6e7 