Week 22 – Challenge 4 – Fence

Challenge page : http://www.ancientsocieties.com/fence/

The Challenge text says Watch the screen closely…

The close part of the picture given is a fence, like the name of the challenge, this is a huge hint to use railfence cipher to decode something.

In the picture, we have 5 groups of characters, from left to right :

Using a railfence cipher decoder like http://geocachingtoolbox.com/index.php?page=railFenceCipher we get :

We can see the word PRESTIGE and some gibberish : BRLPRKYHEEKW

From PRESTIGE, we can think about the novel and movie The Prestige (http://en.wikipedia.org/wiki/The_Prestige)

In the movie, a journal as a special keyword : TESLA

We can use this keyword to decode BRLPRKYHEEKW, with a Vigenere decoder like http://rumkin.com/tools/cipher/vigenere.php

The solution is INTERRUPTERS

The solution page is http://stl.la/interrupters, this page is redirected to http://www.ancientsocieties.com/journal-keyword/