The flaw which allowed the Allies to break the Nazi Enigma code. More links & stuff in full description below ↓↓↓ First video explaining Enigma: Extra footage: Brown papers on ebay: Periodic Videos: This video features Dr James Grime discussing Enigma, the Bombe and Alan Turing. James' "day job" is touring with the Enigma machine - he could even visit you - see more at The maths of breaking the Enigma by James Grime NUMBERPHILE Website: Numberphile on Facebook: Numberphile tweets: Subscribe: Videos by Brady Haran Patreon: Brady's videos subreddit: Brady's latest videos across all channels: Sign up for (occasional) emails: Numberphile T-Shirts: Other merchandise: