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Cryptogram
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<p>A cryptogram is a type of puzzle that consists of a short piece of <a href="/facts/Encryption/16q29Fdv">encrypted</a> text. Generally the <a href="/facts/Cipher/eJnuftYe">cipher</a> used to encrypt the text is simple enough that the cryptogram can be solved by hand. <a href="/facts/Substitution_cipher/PCTy2EJL">Substitution ciphers</a> where each letter is replaced by a different letter, number, or symbol are frequently used. To solve the puzzle, one must recover the original lettering. Though once used in more serious applications, they are now mainly printed for entertainment in newspapers and magazines. </p><p>Other types of <a href="/facts/Classical_cipher/uXMQS0tE">classical ciphers</a> are sometimes used to create cryptograms. An example is the <a href="/facts/Book_cipher/KkkK0fjA">book cipher</a>, where a book or article is used to encrypt a message. </p>