Quoting Dave Kaleta
This is a very pleasing creation to look at. However, I feel that some credit is due to Jason Corlett who created a functional version of the game as part of the MOCathalon (February 15th, 2010),
http://www.mocpages.com/moc.php/186336. Jason's creation may not have the same aesthetic qualities of your creation, but he deserves at least a nod of acknowledgement.
I built this without having seen Jason's rendition; I only found out about after someone linked to it on Flickr:
http://www.flickr.com/photos/hoyvinmayvin/4687336568/ (fourth comment down). I don't quite feel that credit is due in a purely logical sense, because I didn't even know his creation existed before I had posted mine. But his rendition absolutely deserves attention; I thought about making a functioning model but gave up early on. Props to Jason for making it work; it's an incredible feat.