1. g1f3  1... d7d5  2. e2e3 Nakamura is faithful to his blitz repertoire. 2... c7c5  3. b2b3  3... b8c6  4. f1b5 This is a Nimzo-Indian played with White. These variations where you play a popular position with colors reversed are always confusing. It's usually difficult to know how good it is to have an extra move. The computer is not impressed with this setup for White, but this is a blitz game so what the computer thinks about the opening is not so important. 4... f7f6 The best move, according to the computer (even though I just wrote that what the machine thinks is not so important in a blitz game). 5. c2c4  5... d5d4  6. b3b4 Tension builds pretty fast in this game. White tries to break the pawn chain, but for that it's necessary to move the b-pawn again. 6... e7e5  7. b4c5 Nakamura decides to break the chain immediately. 7... f8c5  8. e3d4  8... c5d4 The right move to fight for an advantage. 9. f3d4  9... d8d4  10. e1g1 Provoking Aronian into taking the a1-rook. This time he correctly resists. 10... g8h6 