The Imitation Game war (and the puzzle was not set by Turing, who was no good at them). Google, which sponsored the New York Premiere of the film, launched a competition called "The Code-Cracking Challenge" on 23 November 2014. It is a skill contest where entrants must crack a code provided by Google. The prize/s will be awarded to entrant/s who crack the code and submit their entry the fastest. In November 2014, ahead of the film's US release, "The New York Times" reprinted the 1942 puzzle from "The Daily Telegraph" used in recruiting codebreakers at Bletchley Park during the Second World War.
Reflector (cipher machine) Reflector (cipher machine) A reflector, in cryptology, is a component of some rotor cipher machines, such as the Enigma machine, that sends electrical impulses that have reached it from the machine's rotors, back in reverse order through those rotors. The reflector simplified using the same machine setup for encryption and decryption, but it creates a weakness in the encryption: with a reflector the encrypted version of a given letter can never be that letter itself. That limitation aided World War II code breakers in cracking Enigma encryption. The comparable WW II U.S. cipher machine, SIGABA, did not include a reflector.