Greg Chamitoff and the ISS chess board.
It's Greg vs. Greg in a space chess match on the ISS. STS134 astronauts Greg Chamitoff and Greg Johnson are competing. Their space moves are being covered on Twitter, which you can follow on http://twitter.com/#!/chessmagnet. The game will be played in between the busy schedule of the astronauts during Endeavour's 14-day stay at the ISS. You can join the game yourself! Go to the United States Chess Federation website at http://www.uschess.org/content/blogcategory/301/629/ and suggest moves to the players!