Klaus Schmeh Apr 21, 2026 The Furlong postcard: A mystery that is driving me mad Of the many unsolved ciphers I have encountered over the years, this is one of the strangest. Read More No Comments InUncategorized
Klaus Schmeh Apr 19, 2026 The Ohio cryptogram: An unsolved crypto mystery Among the many unsolved historical ciphers, one mystery that I find particularly intriguing is the Ohio Cryptogram. More than a century after its publication, this encrypted message remains unsolved. Read More No Comments InGeneral
Klaus Schmeh Apr 16, 2026 Welcome to my new website! On this website, you will find a wide range of information about the history of cryptography, codebreaking, and related topics. Read More No Comments InGeneral