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Could you be a top British spy? Test yourself with GCHQ's ultra-tough Christmas challenge
Alan Turing and his team famously cracked the Enigma Code to give the Allied Forces a crucial advantage in the Second World War. Alongside fellow code-breaker Gordon Welchman, he built a machine known ...
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GCHQ's festive puzzles are back to test your wits
Is it turkey, tinsel or the tree that makes you feel all Christmassy inside? For some people, it’s not truly the festive season until they’ve had a crack at the government spy department’s ...
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