p 　　Documentary that reveals the secret story behind one of the greatest intellectual feats of World War II, a feat that gave birth to the digital age In 一九四三, a 二四-year-old maths student and a GPO engineer combined to hack into Hitler 三九 s personal super-code machine - not Enigma but an even tougher system, which he called his 三九 secrets writer 三九 Their break turned the Battle of Kursk, powered the D-day landings and orchestrated the end of the conflict in Europe But it was also to be used during the Cold War - which meant both men 三九 s achievements were hushed up and never officially recognised p