I just started doing these and am very much enjoying it so far despite not being much of a programmer (and never having done any crypto before!). I spent a good

I just started doing these and am very much enjoying it so far despite not being much of a programmer (and never having done any crypto before!). I spent a good Saturday afternoon doing the first 8 though have to confess problem 4 seems I be confounding me despite having easily found the answer to problem 3 :( and whatever bug I have in problem 4 also means my problem 6 isn't working either. And sadly I have to get back to my real work now it's Monday again!