I think the risk of being marked/banned as a 'cheater' for anything to do with this particular kata is low.
It turns out to be very challenging to write a mystery puzzle like this and not inadvertently leave in some way to beat it the 'wrong' way.

If you have some more information about what happened, and it is something that can be fixed in the kata itself, it should be fixed, of course!

Hello,
please, can you provide info if in future, you can/are going to penalize accounts with cheat solutions in any way, or can you deny that you are going to do so in future for accounts with cheat solutions created before change of rules?
I believe its importnat information to know if are in such situation (have a cheat solution) to know if we should create new account or use other wesite (other website as creating new account might lead to being labelled as cheater because you log in from same IP address, have same account info or something).
Thanks