Skip to main content


The resource pages contain a wealth of material about codebreaking and the resources menu links to all the information you need about the challenge. If you want to read about the competition offline we have prepared a short guide which you can download as a pdf at:


We have introduced a new bulk registration tool this year that should allow you to register a number of teams quickly and easily. You can find the toll in your account page and will need to use the password “teachercipher2019” to use it. We hope this makes it easier for you, but let us know what you think.

If you have any questions please do post them in the forum, or get in touch by email at

[email protected]


Teacher Registration

To register as a teacher and be able to invite your students to participate in the Cipher Challenge, please enter the teacher password below.