BTK word puzzle analysis

Below is contributor Chris Klein’s interesting analysis of the BTK word puzzle. He breaks down the overall puzzle into three smaller puzzles that are suggested by the appearance of clean breaks between major words and the placements of the letter…

High resolution map cipher

Deborah Silva recently purchased from Tom Voigt a police photograph of the map code letter the Zodiac Killer mailed to the SF Chronicle on June 26, 1970. She generously shared this high quality scan of the photograph: (Click to enlarge)…

New Scientist

The May 21, 2011 issue of New Scientist ran a feature called “Uncrackable Codes”, which featured MacGregor Campbell’s summaries of eight famous unsolved mysteries: Somerton Man, Beale’s buried treasure, the MIT time-lock puzzle, Kryptos, the Voynich Manuscript, Enigma, Elgar’s unread…

Mountain of evidence?

Audrey Cooper, managing editor of the San Francisco Chronicle, recently tweeted this: The thickness of that stack of papers suggests lengthy and convoluted attempts to justify the claimed solution. It’d be interesting to know what approach the solver took. In…

My Name Is… Sarah The Horse?

The 13-character cryptogram mailed by Zodiac on April 20, 1970 to the San Francisco Chronicle remains unsolved, despite many attempts to find solutions that fit into the cipher text. Did Zodiac really encipher a name in this letter? If we…