Has anyone had a go at this yet?
http://www.canyoucrackit.co.uk/
Explanation about it is here:
http://www.bbc.co.uk/news/technology-15968878
GCHQ Challenge
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Re: GCHQ Challenge
I and some colleagues at work had a go at it. There are three stages, and that image is the first one. It's very computer-oriented. I won't give any spoilers away, but it's not the kind of code you can solve with a pen and paper; quite a bit of programming knowledge and tools are required to understand and solve the puzzles. I got to the third stage, but my computer packed up on Friday and I had to replace it so I've had limited opportunity to look at it further.