Up a semitone?
ThsehuyvbshwtihepueaaieieeiqelisrrbnrnnloukaTeieigotelneeshdsItafhxbosyteiatoscetefuwctnC sbqhmoatsoietapvuaencherpcheriarseoeddhhisoorasmmtsfensabuecaibeooricrasntggicfrwqisbhu eehnhataupqlamrTtanr
This is the fifth of our challenge ciphers.
We recommend that you attempt them in order, as the solution of each challenge gives a small (and necessary!) hint for the next challenge.
Have you managed to solve the entire Stage 5 Cipher Challenge? Solutions are now closed, but perhaps you want to take up the full challenge.
Successful solvers of this part were
Patrick from Woodbridge School, England
An Anonymous Solver from Somewhere in the US
Joseph from Hong Kong
The solution was:
The keyword for the last cipher was pi. The technique used in this cipher is a Caesar square. It's probably a bit obvious having a square number of characters in the message. The next one might well be a combination of the techniques used so far.
This challenge cipher forms part of a very difficult sequence of ciphers suitable for keen groups or individuals, maths clubs and very optional homework challenges. Don't try this in the classroom!