1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1c4  3... f8c5  4. c2c3  4... g8f6  5. d2d4  5... e5d4  6. b2b4 A very rare  move. And a top guess by Dubov as we shall witness! 6... c5b6  7. e4e5  7... f6e4  8. c4d5  8... e4c3  9. b1c3  9... d4c3 All these moves are obvious and logical, as well as Dubov's next novelty. 10. c1g5 In the spirit of the old masters. Material is irrelevant; initiative is everything. 10... c6e7  11. e1g1 Karjakin's problems were multiplied because his opponent was  practically blitzing his moves. 11... h7h6 Getting ready to swap this  bishop. 12. g5h4  12... e8g8  13. f1e1  13... d8e8 One pin is broken, and the knight is ready to help. 14. d5b3 Dubov keeps the bishop pointed at the enemy king. 14... a7a5 Aiming to chase the white bishop once and for all. And this  might well be the crucial mistake! 15. h4f6 The first in-depth thought by Dubov, and a smashing move! The  machine is getting wild and immediately claims a decisive attack for the  first player. 15... a5a4 This is definitely a mistake. 16. b3c4 