2nd Talk Of The Spring Season Friday 6 April

The April talk hosted by the society covers the story of how Bill Tutte broke the Lorenz code without ever seeing a Lorenz machine.

William Thomas “Bill” Tutte OC FRS FRSC (14 May 1917 – 2 May 2002) was a British codebreaker and mathematician. During the Second World War, he made a brilliant and fundamental advance in cryptanalysis of the Lorenz cipher, a major Nazi German cipher system which was used for top-secret communications within the Wehrmacht High Command. The high-level, strategic nature of the intelligence obtained from Tutte’s crucial breakthrough, in the bulk decrypting of Lorenz-enciphered messages specifically, contributed greatly and perhaps even decisively, to the defeat of Nazi Germany.

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