The Alan Turing Codebreaker's Puzzle Book

Published 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.