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50 Codes that Changed the World: . . . And Your Chance to Solve Them!

Sinclair McKay

6 Reviews

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Coding theory & cryptology

Uncrackable codes and secret cyphers that helped win wars, spark revolutions and change the faces of nations, rediscovered and explored in the newest book by the bestselling author and historian, Sinclair McKay.

A CUNNING CHRONICLE OF THE 50 CODES THAT ALTERED THE COURSE OF HISTORY AND CHANGED THE WORLD

From the bestselling author of Bletchley Park Brainteasers and The Scotland Yard Puzzle Book.

There have been secret codes since before the Old Testament, and there were secret codes in the Old Testament too. Almost as soon as writing was invented, so too were the devious means to hide messages and keep them under the wraps of secrecy.

In 50 Codes that Changed the World, Sinclair McKay explores these uncrackable codes, secret cyphers and hidden messages from across time to tell a new history of a secret world. From the temples of Ancient Greece to the court of Elizabeth I; from antique manuscripts whose codes might hold prophecies of doom to the modern realm of quantum mechanics, you will see how a few concealed words could help to win wars, spark revolutions and even change the faces of great nations.

Here is the complete guide to the hidden world of codebreaking, with opportunities for you to see if you could have cracked some of the trickiest puzzles and lip-chewing codes ever created.

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Praise for Sinclair McKay's books:

'This book [The Secret Life of Bletchley Park] seems a remarkably faithful account of what we did, why it mattered, and how it all felt at the time by someone who couldn't possibly have been born then. - THE GUARDIAN
[Bletchley Park Brainteasers] is outrageously difficult but utterly fascinating. - THE EXPRESS
'Sinclair McKay's account of this secret war of the airwaves in [Secret Listeners] is as painstakingly researched and fascinating as his bestselling The Secret Life Of Bletchley Park, and an essential companion to it.' - DAILY MAIL

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Praise for 50 Codes that Changed the World: . . . And Your Chance to Solve Them!

  • 'Sinclair McKay's account of this secret war of the airwaves in [Secret Listeners] is as painstakingly researched and fascinating as his bestselling The Secret Life Of Bletchley Park, and an essential companion to it.' - Daily Mail

  • This book [The Secret Life of Bletchley Park] seems a remarkably faithful account of what we did, why it mattered, and how it all felt at the time by someone who couldn't possibly have been born then. - The Guardian

  • Disturbing and compelling in equal measure. Sinclair McKay brings a dark subject vividly to life in [The Fire and the Darkness]. - Keith Lowe, author of Savage Continent and The Fear and the Freedom

  • Engrossing . . . well-researched, powerfully written, and balanced. For all interested in military history and World War II. - Library Journal

  • Powerful . . . there is rage in his ink. McKay's book [Dresden] grips by its passion and originality. Some 25,000 people perished in the firestorm that raged through the city. I have never seen it better described' - Sunday Times

  • [Bletchley Park Brainteasers] is outrageously difficult but utterly fascinating. - The Express

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Sinclair McKay

Sinclair McKay is a bestelling author and social historian. He is the author of the Sunday Times bestseller Bletchley Park Brainteasers as well as the bestselling Secret Life of Bletchley Park, which together have sold over 400,000 copies. He has authored many other books including The Scotland Yard Puzzle Book, The Tower of London Puzzle Book and Secret Britain. He writes for the Spectator and the Telegraph and spends much of his life eyebrow-deep in dusty archives! He lives in east London.

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