British mathematician Alan Turing cracked the Germans’ Enigma code during W.W. II.

The Turing Enigma

Nearly 70 years after being prosecuted for homosexuality, Alan Turing is joining the Queen on Britain’s £50 note. His nephew warns that the code breaker wouldn’t have wanted to be seen as a victim

By Hana Carter

To celebrate the circulation of the new £50 note depicting Alan Turing, GCHQ — the successor organization to his Bletchley Park codebreaking team — recently released what it described as its “toughest puzzle ever”. It seemed apt.

Regarded as a founder of computer science, Turing cracked Germany’s Enigma machine during the Second World War, but the puzzling circumstances surrounding his death have never been fully resolved.