Today I have read on The Register about http://canyoucrackit.co.uk/. The puzzle looked interesting at a first glance (x86 code!), so I tried to crack it. It wasn’t too difficult – there is a twist though, so it was a little victory. I won’t publish the solution, but I am sure soon many web sites will make it available anyway. Let’s just say, it starts with ’15b4′.
The second stage (there are 3) is about virtual memory, and I am not sure if I have time/skills/patience to play with it. But who knows… GCHQ jobs are waiting 😉