I've written up what I think is a good challenge, gotten feedback in the sandbox, and then posted it to the site. Upon submitting I'm met with a page that shows:
When I simply try to resubmit my post, I get a message saying there is a duplicate which links to the above page! For reference, here is the post in question.
What happened? Is there anything I did which may not play nice with the site? How can I post my code challenge?