The GCHQ Puzzle Book: fiendish, infernal, addictive and our undisputed Christmas number one. We can only warn you of its highly addictive nature. Now, if 2 plus 3, minus that 12…
The secrets of the country depend on you.
Find out if you’ve got what it takes to be a code breaker?
GCHQ’s top-secret codebreakers have always protected the country – from Bletchley Park’s war-ending WWII breakthroughs to saving us all from life-destroying foreign cyberattacks.
But what kind of mind does it take to work there? And do you have the brain power, cunning and resourcefulness to pit your wits against them and win? Here, taken from their archives, are decades of codes, puzzles and challenges for everyone to try.
You’ll discover:
- Tips on how to get into the mind-set of a codebreaker
- Puzzles ranging in difficulty from easy to brain-bending
- Challenges that have never been solved
- Insight into the organisation's top secret history dating back to 1919
The security of the country is at stake.
What are you waiting for? Get cracking!
Publisher: Penguin Books Ltd
ISBN: 9781405970518
Number of pages: 368
Weight: 323 g
Dimensions: 197 x 129 x 25 mm
A fiendish work, as frustrating, divisive and annoying as it is deeply fulfilling: the true spirit of Christmas—GuardianSurely the trickiest puzzle book in years. Crack these fiendish problems and Trivial Pursuit should be a doddle—Daily TelegraphIdeal for the crossword enthusiast—Daily TelegraphAn explosion of a puzzle collection, too, with hundreds of questions and loads of peripheral material, including captioned photographs and history of twentieth-century British encryption, featuring the work of Alan Turing—The Times Literary SupplementThis isn't your grandfather's Sudoku book. Rather, it's a puzzle compendium put together by the organisation that made the Bletchley Park breakthroughs - quizzes, bewilderments and brainteasers to challenge even the sharpest of minds—The Gentleman's JournalWINNER OF STOCKING FILLER OF THE YEAR AWARD—THE GUARDIAN
A nice insight in to the minds of GCHQ and other code breakers . We purchased two of these books for xmas presents but a little annoyed as we found them advertised else where for 50% cheaper which is so frustrating... More
Good book
Excellent thought provoking book thoroughly recommend
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