The Alan Turing Cryptic Codebreaking Puzzle Book

The puzzles are arranged across five chapters so that they become progressively more difficult until the ultimate test Enigma Puzzles.

As well as in depth solutions this book has a hints section, allowing puzzle solvers a little help if they become stuck before they need to turn to the solutions.

The Alan Turing Puzzle Books series has sold over 140,000 copies.

Dr Gareth Moore is the author of a wide range of brain-training and puzzle books for both children and adults. He is the creator of online brain training site www.BrainedUp.com and runs the daily puzzle website www.PuzzleMix.com. He gained his Ph.D from Cambridge University in the field of Machine Learning, and has contributed to various advanced projects for leading technology companies.

Dermot Turing graduated from King's College Cambridge and New College Oxford. He spent his career in the legal profession, most recently as a partner of Clifford Chance. Since 2014 he has moved into a more varied range of activities, including an active role as a trustee of Bletchley Park. Dermot Turing is the nephew of Alan Turing and author of Prof: Alan Turing Decoded (2015) and the well-received X,Y and Z: The Real Story of How Enigma Was Broken (2018).