The Alan Turing Cryptic Codebreaking Puzzle Book
Published in association with The Turing Trust, this incredible collection of puzzles allows you to put your codebreaking skills to the test - if you can solve every puzzle in the book you might once have been recruited to join the ranks of Alan Turing and the Bletchley Park codebreakers!
This collection contains an incredible range of different puzzle types and so presents a great challenge for any puzzle lover. The puzzles are arranged into five levels of difficulty which become progressively harder, so you can start with the (relatively) easy ones and build up to the truly expert level tests. A comprehensive hint section is provided to help you on your way.