1. d2d4  1... d7d5  2. c2c4  2... d5c4  3. e2e4  3... b7b5  4. a2a4  4... c7c6  5. a4b5  5... c6b5  6. b1c3  6... d8b6 Nakamura did not mind repeating a line which Aronian used at the first Grand Prix event that took place in Berlin as well. 7. c3d5 The most aggressive move. It should be noted that not only did the white pieces rapidly create threats while developing, but they were moved in a very rapid speed by their commander too. 7... b6b7  8. c1f4  8... e7e5 A key resource, to bring the idle pieces out. 9. f4e5  9... b8d7  10. e5f4  10... g8f6 Black needs to sacrifice the exchange but at least is gaining the initiative back. 11. d5c7  11... e8d8  12. c7a8  12... b7e4 Another important, subtle move that destroys White's coordination. 13. g1e2  13... e4a8  14. d1d2 It is, however, Aronian who fires a novelty again. This move is obvious and logical: White speeds up his development and makes sure he will castle properly this time. 14... f6d5 Nakamura played his next obvious developing moves quickly. 15. e2c3  15... f8b4  16. f1e2  16... h8e8  17. f4g3 However, from here on the American GM started burning time, whereas Aronian kept blitzing, in a most-annoying (for the opponent) manner. 17... d7f6  18. e1g1  18... f6e4 All of this is pretty obvious, and at a glance looks good for Black. 19. d2c2 But now what $2 To grab the pawn or to develop even further $2 19... c8f5 Nakamura opted for the second and created a concrete threat. This, however, has a flaw.... 20. g3h4 It is essential to move the bishop from the knight's attack. 20... f7f6  21. e2f3 A nice move $1 White is not afraid of the discovered attacks as he needs to untie the central knot. 21... b4c3 