Alan Turing the Great Mathematician who played a key role in the allied victory in the second world war, by cracking the encoded messages produced by German Enigma machines.

Alan Turing led the life of an archetypal English Cambridge don a fellow of Kings College Cambridge when his peaceful life was abruptly ended by an invitation by the Government Code and Cypher School to become a cryptanalyst at Bletchley Park in September 1939,the day after Neville Chamberlain declared war

At Bletchley Park Turin concentrated on cryptanalysis of the Enigma.