STEP ASIDE MURDLE BECAUSE GCHQ ARE BACK WITH EVEN MORE BRAIN-BENDING PUZZLES TO PUT YOUR WITS TO THE TEST

Now a pocket-sized paperback, The GCHQ Puzzle Book II is the ideal present for armchair code-breakers and amateur cryptographers alike

'Fiendish, frustrating, annoying, fulfilling' Guardian

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The spooks at GCHQ need your help again.
Can you break these fiendish codes and prove you’re a master puzzler?
The defence of the realm depends on GCHQ. And these fiendish puzzles and tests are how they test the best. Have you got what it takes in this second round of brain-bogglers?
Inside you’ll find puzzles to develop:
- Lateral thinking and ingenuity
- Skills to spot patterns
- Your ability to break ciphers
- A mindset to tackle authentic entrance tests
Keeping the country safe in secret since 1919, GCHQ is always on the look out for new recruits. Discover if you’ve got the kind of incredible, puzzle-solving mind to work there . . .
ENJOY THESE TWO TEASERS
Can you see how the following words are connected?
Chuckle, Double, Euro, Pro, Stereo, Super, Tunnel
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If Groundhog Day is 1, Bastille Day is 2, Valentine’s Day is 7, then Hallowe’en is?
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‘An explosion of a puzzle collection’ The Times Literary Supplement

This 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 Journal

The fiendishly difficult puzzle book is back. This is the perfect gift to fuel his ludicrous presumption that he could have definitely been a spy - even better if he's already dog-eared the first version—Huffington Post

GCHQ (Government Communications Headquarters) is a signals intelligence and cyber security organisation whose mission is to keep Britain safe from terror attacks and cybercrime.