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  2. List of ciphertexts - Wikipedia

    en.wikipedia.org/wiki/List_of_ciphertexts

    Olivier Levasseur's treasure cryptogram Unsolved 1760–1780 Copiale cipher: Solved in 2011 1843 "The Gold-Bug" cryptogram by Edgar Allan Poe: Solved (solution given within the short story) 1882 Debosnys cipher: Unsolved 1885 Beale ciphers: Partially solved (1 out of the 3 ciphertexts solved between 1845 and 1885) 1897 Dorabella Cipher ...

  3. Verbal arithmetic - Wikipedia

    en.wikipedia.org/wiki/Verbal_arithmetic

    Verbal arithmetic, also known as alphametics, cryptarithmetic, cryptarithm or word addition, is a type of mathematical game consisting of a mathematical equation among unknown numbers, whose digits are represented by letters of the alphabet.

  4. Cardan grille - Wikipedia

    en.wikipedia.org/wiki/Cardan_grille

    Alternative grilles possess apertures for single letters only and can be used quickly. Messages are filled out with a jumble of letters or numbers and are clearly cryptograms whereas Cardano intended to create steganograms. These single-letter grilles may be named after Cardano, but they are also called simply cardboard ciphers.

  5. Cryptogram - Wikipedia

    en.wikipedia.org/wiki/Cryptogram

    A cryptogram is a type of puzzle that consists of a short piece of encrypted text. [1] Generally the cipher used to encrypt the text is simple enough that the cryptogram can be solved by hand. Substitution ciphers where each letter is replaced by a different letter, number, or symbol are frequently used.

  6. National Cipher Challenge - Wikipedia

    en.wikipedia.org/wiki/National_Cipher_Challenge

    The competition is organised into eight to ten challenges, which are further subdivided into parts A and B. The part A challenge consists of a comparatively simpler cryptogram, and usually provides some useful information to assist in the solving of part B. Part B is usually more complex. In later challenges the cryptograms become harder to ...

  7. File:Cryptogram-example.svg - Wikipedia

    en.wikipedia.org/wiki/File:Cryptogram-example.svg

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses ...

  8. Book cipher - Wikipedia

    en.wikipedia.org/wiki/Book_cipher

    The King James Bible, a highly available publication suitable for the book cipher.. A book cipher is a cipher in which each word or letter in the plaintext of a message is replaced by some code that locates it in another text, the key.

  9. Straddling checkerboard - Wikipedia

    en.wikipedia.org/wiki/Straddling_checkerboard

    Comparing this table with a lower one, it is evident that it is not the modern straddling checkerboard, and letters encoded with one digit are not the most frequent letters of Latin (T is much more frequent than O [2]), but the idea exploited in the latter ciphers is present.

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