Diana Kimpton  author
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How good are you at cracking codes?

This quiz is fairly difficult, but you should be able to do it if you've read the book.

The Knowledge: Cracking Codes

Message 1
This two word phrase has been enciphered with a Caesar shift. I'm not telling you which one - you'll have to work that out for yourself.

EQFG DQQM

The answer is the key to the next two messages.

Click here if you want to see the answer.

Message 2
This message has been enciphered using a cipher alphabet created using the first answer as the key.

IUACX BLUUE CZDXC DQNTL DUEBY

Hint: Don't forget you only use each letter in the keyword once so miss out any duplications.

Click here if you want to see the answer.

Message 3
This message has been enciphered with a transposition cipher that juggles columns using the first answer as the key.

DKCSE LWCTT ISLAI KNILC SECLE GETDE RHAEK OIOPA NNDAN

Hint: Don't forget to number the duplicated letters in the key in the order they appear.

Click here if you want to see the answer


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