I got the book and couldn't put it down. Luckily when I got to the contest at the back I found myself with a couple of weeks of summer holidays with Pascal and my 286 and no internet connection.
I cracked the manual ciphers with computer programs. I started on the Engima cipher, but did not create an accurate Enigma machine (the drawings in the book were incomplete and I didn't know that and had no internet access).
A couple of years ago I chanced upon the book again and set about solving the Enigma part. https://williamedwardscoder.tumblr.com/post/145830743193/my-...
Fond memories! :D
The book is warmly recommended.
> Compaq provided access to one of their benchmarking computers with four 667 MHz Alphas and 8 GB of primary memory.
This was massive computational power for a workstation in 2000! It's always impressive to see the progress of Moore's Law, even although single-core performance has peaked long ago.