(Here’s a video panorama taken from the top platform area, and diagrammatic views facing North and facing South.) The reference to magnetic north seems to imply that the bearing was calculated not from the map, but by eye from the peak of Mount Diablo. to be multiplied by 6.4 to give a physical distance in miles along that direction). The Phillips 66 California roadmap scale for “San Francisco And Vicinity” is 1 inch to about 6.4 miles: so the plaintext should presumably contain both a number (for the direction) and a number in inches (i.e. O E S N B X (shaded box) T (C) E T D I E Iįurthermore, solving this (slightly more language-like) cipher as if it were a newspaper cryptogram again seems to yield nonsense, e.g.
Unfortunately, applying the Z408 homophonic cipher key to it yields nothing that makes any obvious sense:. Interestingly, because nearly all of the cipher shapes used in the (solved) Z408 cipher key reappear in this cipher, it seems possible that this might do the trick. As a result, it would be impossible to solve such a small homophonic ciphertext unambiguously without a large amount of extra information, or without knowing the cipher key. This seems to imply that we are looking at a homophonic cipher, the same cipher technique that the Zodiac Killer used in his Z408 cipher. Only three shapes (the ‘C’-shape, the ‘O’-shape, and the hollow triangle shape) within the ciphertext appear twice: everything else appears exactly once.
#Zodiac killer cipher code#
Diablo code concerns Radians &#inches along the radians“.
#Zodiac killer cipher how to#
(There’s a huge version here.) The Zodiac Killer had placed his signature symbol on top of Mount Diablo, together with what seem to be instructions as to how to link the map with the contents of the cipher.Ī follow-up note from the Zodiac Killer (on page 5 of the “little list” letter, postmarked 26th July 1970) added: “ PS.
This cipher was accompanied by a section of a map: made by the Phillips 66 company, this was a roadmap of California that at that time was widely available at service stations. It was part of a letter that ended in this way:. the Zodiac Killer’s 32-character-long cipher, also known as the “map code” cipher, or the “Phillips roadmap cipher”) was sent to the San Francisco Chronicle on 26th Jun 1970.
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