In 1940, Germany was sending vital telegrams through neutral Sweden using a sophisticated cipher, and it fell to mathematician Arne Beurling to make sense of the secret messages. In this week's episode of the Futility Closet podcast we'll describe the outcome, which has been called "one of the most remarkable success stories in the history of cryptanalysis."
We'll also learn about mudlarking and puzzle over a chicken-killing Dane.
