Do you fancy mastering morse code? Discovering whether your crossword hobby might have seen you recruited into the history books? Do you think you could have outsmarted an enigma machine? If so and you’re a Bletchley Park history buff or a fan of the GCHQ Quiz Book, then this is the book for you. When scouring the land for top-level code breakers, the Bletchley Park recruiters left no stone unturned. As well as approaching the country’s finest mathematicians, they cast their nets much wider, interviewing sixth-form music students who could read orchestral scores, chess masters, poets, linguists, hieroglyphics experts and high society debutantes fresh from finishing school. To assess these individuals they devised various ingenious mind-twisters – hidden codes, cryptic crosswords, secret languages, complex riddles – and it is puzzles such as these, together with the fascinating recruitment stories that surround them, that make up the backbone of this book. The code breakers of Bletchley