Jason Wong, the man who solved the 2008 Ginter Code, is hosting a code contest of his own.
Here is a link to his blog with a note about the contest.
Anyone looking to take a shot at the Ginter Code from the Allen & Ginter set may want to give Jason's cipher a try.
Here is a direct linkto the cipher. I hope others will try to crack it, I know I'm going to give it a shot.
Thanks for putting time into designing it Jason.