From November 21 to 25 in American St. Louis a warmup match took place between the best chessplayers from Armenia and US, Levon Aronian and Hikaru Nakamura.

The two of them held four classic and sixteen blitz matches. In the first two classic matches the score was equal. The second two ended in a draw, so the final score was 8:8, because the rules said that a victory gives four points and a draw gives two points. In the blitz match Nakamura scorec three points more than Aronian. The overall score was 17,5:14,5 in favor of Nakamura.

The prize fund was 100,000$. Nakamura received 60,000$ of it, and Aronian received 40,000.