An excellent collection of puzzles that allows you to test your 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 wide range of different types of puzzles. Published and approved by the organization run by early computer genius Alan Turing's family.
**This book may contain a sharpie mark on the top or bottom edge and may show mild signs of shelf wear.