The Alan Turing Codebreaker's Puzzle BookPublished in association with The Turing Trust, this incredible collection of puzzles allows you to test your own codebreaking skills. If you can solve every puzzle in the book, you might once have been recruited to join the ranks of Alan Turing's codebreakers! It contains a breathtaking range of different types of puzzles, and so presents a wonderfully entertaining challenge for any puzzle lover. The Alan Turing Codebreaker's Puzzle Book is a must