1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1c4  3... g8f6  4. d2d3 A Giuoco Pianissimo by Dubov? There is something wrong here, the Russian GM usually sacrifices a pawn around here... 4... f8c5  5. c2c3  5... d7d6  6. c1g5  6... h7h6  7. g5h4  7... a7a5  8. b1a3 Ah, that is a juicy novelty! Dubov surprises Vidit on his own territory. 8... c5a3 Vidit accepts the challenge and ruins the opponent's pawn structure. 9. b2a3  9... d8e7 In the spirit of the Four Knights defence. There are also doubled pawns there. True, on the c-file, but still, a blockade on the dark squares makes perfect sense. 10. e1g1  10... c6b8 The logical follow up. 11. d3d4 Dubov searches for a class. He's got the development, the bishops, the mood. 11... b8d7  12. a1b1 The rook is getting ready to torture the opponent, even if he stays in the center. 12... g7g5  13. h4g3  13... f6e4 A most principled move!