It's original enough so I wouldn't call it stupid, I'll give it that. That being said, I'd also welcome a way to downvote kata, or better yet a tag that'd make it damn clear that this is an obscure retroengineering bs mostly done for fun. The fact that it's just a one-trick-pony without rigorous tests becomes apparent once you see some solutions ("-censored- = -censored2-" oneliner). Didn't waste more than 2 minutes on this before forfeiting.