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Video: New Alan Turing notebook shows codebreaking was a 'hobby on the side'


Cracking German codes to unravel Nazi intelligence was one of the most important operations of the Second World War, a mission undertaken by thousands of Britain's best minds.

But for Alan Turing, the most celebrated of the Enigma codebreakers, it appeared little more than a diversion from his true love - the pursuit of academic mathematics.

A notebook newly displayed at Bletchley Park in Buckinghamshire reveals Turing spent much of his spare time on his own work, unpicking and commentating on the language of mathematics itself.

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