Challenge 3
Oden en oda odery MRETD tebdar tdgqqamca. Xaqq ysma ez usv'ia lgmgcay os nsqia eo. Smta gcgem, xa vnay g nvhnoeovoesm tebdar os amtsya oda lanngca, hvo oden oela xa fvlhqay vb oda qaooarn sz oda gqbdghao rgodar odgm fvno ndezoemc eo sr raiarnemc eo. Oden lgpan eo dgryar os trgtp odgm oda Tgangr ndezo sr oda Gohgnd. Em zgto, ez usv xsrp svo dsx lgmu yezzaramo xgun eo tsvqy ha ysma, usv xeqq zemy eo'n g qso dgryar os trgtp! Aiam ns, g tslbvoar tsvqy rgbeyqu tdatp tslhemgoesmn gmy trgtp nvtd g nvhnoeovoesm tebdar wveoa wvetpqu, gmy odara gra qson sz tqvan qepa zrawvamtu gmgqunen odgo tgm ha vnay os hragp oda tsya wvetpqu.Zsr oda zsvrod tdgqqamca, usv xeqq ha zgtay xeod nslaodemc g qeooqa yezzaramo. Eo en g orgmnbsneoesm tebdar, xdetd lagmn odgo oda qaooarn sz oda lanngca dgia noguay oda ngla hvo odaer sryar dgn haam tdgmcay. Os nsqia oda bvjjqa, usv xeqq maay os ragrrgmca oda qaooarn em g crey, em g nbergq zsrlgoesm. Smta usv zemy oda recdo crey neja os vna, gmy oda recdo bqgta os hacem oda nbergq, oda lanngca ndsvqy alarca. Sd, gmy oda pauxsry en lvnetgq.
This is the third NRICH cipher challenge. Well done if you've managed to solve it. Once again, we used a substitution cipher to encode the message, but this time we jumbled up the letters of the alphabet rather than just shifting it or reversing it. This makes it harder to crack than the Caesar shift or the Atbash. In fact, if you work out how many different ways it could be done, you will find it's a lot harder to crack! Even so, a computer could rapidly check combinations and crack such a substitution cipher quite quickly, and there are lots of clues like frequency analysis that can be used to break the code quickly. For the fourth challenge, you will be faced with something a little different. It is a transposition cipher, which means that the letters of the message have stayed the same but their order has been changed. To solve the puzzle, you will need to rearrange the letters in a grid, in a spiral formation. Once you find the right grid size to use, and the right place to begin the spiral, the message should emerge. Oh, and the keyword is musical.
Keyed Caesar alphabet: GHTYAZCDEFPQLMSBWRNOVIXKUJ0123456789
Or a decode alphabet: EPGHIJABVZXMNSTKLROCYUQWDF0123456789
This was a cipher. We looked for words on their own that were used a lot like I and A. And also we looked for words with apostraphes that we knew, example: you're, you've, etc.After that we just guessed different letters and it all worked.We then looked for other words that we had previously used such as:
• Challenge
• Cipher
• Keyword
• Third