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  2. Cryptanalysis of the Enigma - Wikipedia

    en.wikipedia.org/wiki/Cryptanalysis_of_the_Enigma

    This allowed an 8-letter crib for a 3-closure menu, an 11-letter crib for a 2-closure menu, and a 14-letter crib for a menu with only one closure. If there was no closure, at least 16 letters were required in the crib. [129] The longer the crib, however, the more likely it was that turn-over of the middle rotor would have occurred.

  3. Play Arkadium Codeword Online for Free - AOL.com

    www.aol.com/games/play/masque-publishing/...

    Add a letter and crack the code! Add a letter and crack the code! Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. Sign in ...

  4. Kryptos - Wikipedia

    en.wikipedia.org/wiki/Kryptos

    The characters are all found within the 26 letters of the Latin alphabet, along with question marks, and are cut out of the copper plates. The main sculpture contains four separate enigmatic messages, three of which have been deciphered. [2] The Morse code to the ciphers' increasing "complexity" is intended to be as if it "were a fossil". [3]

  5. Enigma machine - Wikipedia

    en.wikipedia.org/wiki/Enigma_machine

    The Enigma machine is a cipher device developed and used in the early- to mid-20th century to protect commercial, diplomatic, and military communication. It was employed extensively by Nazi Germany during World War II, in all branches of the German military. The Enigma machine was considered so secure that it was used to encipher the most top ...

  6. Crossword abbreviations - Wikipedia

    en.wikipedia.org/wiki/Crossword_abbreviations

    Roman numerals: for example the word "six" in the clue might be used to indicate the letters VI; The name of a chemical element may be used to signify its symbol; e.g., W for tungsten; The days of the week; e.g., TH for Thursday; Country codes; e.g., "Switzerland" can indicate the letters CH; ICAO spelling alphabet: where Mike signifies M and ...

  7. Codebreakers crack secrets of Mary Queen of Scots’ lost letters

    www.aol.com/codebreakers-crack-secrets-mary...

    The letters date from 1578 to 1584, a few years before Mary’s beheading 436 years ago.

  8. Caesar cipher - Wikipedia

    en.wikipedia.org/wiki/Caesar_cipher

    Caesar cipher. The action of a Caesar cipher is to replace each plaintext letter with a different one a fixed number of places down the alphabet. The cipher illustrated here uses a left shift of 3, so that (for example) each occurrence of E in the plaintext becomes B in the ciphertext. In cryptography, a Caesar cipher, also known as Caesar's ...

  9. More letters were sent to voters in the ZIP code 37013, in the Antioch neighborhood in Southeast Nashville, than any other ZIP code, with 1,253 letters sent there. Another 645 letters went to ...