Skip to main content
The National Cipher Challenge

Wishing you all a

The Elves will be very busy for the next few days, so you may find that forum posts stack up a bit, especially between 24th and 26th of December, but we will try to get them out when we can.

For those of you working on Challenge 10, hints will appear as scheduled even if Santa won’t let the Elves out to play.

Report a problem