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 The GCHQ Puzzle Book
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The GCHQ Puzzle Book

If 3=T, 4=S, 5=P, 6=H, 7=H ... what is 8?
What is the next letter in the sequence: M, V, E, M, J, S, U?
Which of the following words is the odd one out: CHAT, COMMENT, ELF, MANGER, PAIN, POUR?
Pit your wits against the people who cracked Enigma: over 300 puzzle questions from GCHQ’s archives, used for recruitment and recreation over the years. Increasing difficulty levels. Supporting the Heads Together Campaign, spearheaded by the Duke and Duchess of Cambridge and Prince Harry, with an introductory letter from HRH the Duchess of Cambridge. Includes solutions. The ‘Kristmas Kwiz’ competition section’s answers are available from the book’s website (the competition closed in February 2017).

Paperback, 337 pages.
9” x 6”.

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