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The Lighthouse Conspiracy

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Welcome to the 20th National Cipher Challenge

The website is now open for registration and you are welcome to dive right in. There is loads to explore, with lots of information about the competition, how to register and take part, and information about how to start breaking codes and ciphers or to improve your skills.

If you have questions then head over to the forum to post them. All registered participants (and teachers) can do that and there is an active community of cipher challenge alumni and forum moderators (the Elves) who are waiting to help. Harry or Jodie might even reply themselves.

It is great to welcome you to the National Cipher Challenge family for this special edition of the competition. We hope you enjoy it,

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Go for launch!

We have over 1,340 teams registered for the competition already and are expecting more today. It is possible (though we hope not likely) that the web site will struggle to cope if all of you try […]

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Fancy something different?

If you would like to try your hand at something OldSkool, then you might enjoy this challenge from the Letter Wriggler.

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