Choosing from many options is a curse, especially in rapid and blitz. It seems, however, as there were a couple of more accurate options.
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g2g3 It is remarkable how solid Mamedyarov's openings are. But, actually, let's not get ahead of ourselves. 3... f8b4  4. b1d2  4... d7d5  5. f1g2  5... e8g8  6. g1f3  6... d5c4 Both sides are confidently blitzing their moves and following an earlier game of Keymer’s. 7. d1c2  7... a7a5  8. a2a3  8... b4d2  9. c1d2  9... b7b5  10. a3a4  10... c7c6  11. h2h4  11... h7h6  12. g3g4 Yes,a novelty. And if there is one name to be associated with a g4-attack nowadays, that would be Mamedyarov $1 12... f6g4 Forced and played quickly, but after White's next move, Keymer had to start burning precious time. 13. f3e5 