Forum Rules

If you wish to leave a comment please act responsibly. The Cipher Challenge is a really friendly community and we want to keep it that way. No personal or innapropriate comments should be made, even mild criticism can be hurtful so think twice before pressing the submit button - "do as you would be done by".

Concerns about a comment should be emailed directly to the Cipher Master at This email address is being protected from spambots. You need JavaScript enabled to view it.. Hints about the challenges may be blocked or held back at our discretion. We do reserve the right to refuse to publish comments without entering into a discussion about why (there are a lot of you and not many of us to monitor the site!), and to censor comments as we see fit.

Please be patient if it takes a while for your comments to be approved, we haven't appointed Harry's team of elves yet this year and Harry is a bit busy getting things up to speed.