John Rose from Australia has uncovered some interesting features within the Zodiac Killer's unsolved 340 Cipher, mailed to the San Francisco Chronicle on November 8th 1969. This does not tackle the entirety of the cipher, as the extremities of the code still remain unbroken. What it does do however is show an extremely promising correlation between the 340 Cipher and Halloween Card, using predominantly 81 characters in a 9 X 9 grid formation at the center of the cipher. It has been achieved using nothing more than Dave Oranchak's Web Toy, implementing zkdecrypto cipher-cracking software. The tool can be found on the Zodiac Killer Ciphers website here. If you place the following letters into the Web Toy, you can recreate the results shown in the grid below. For further correspondence on this matter email: email@example.com
The Youtube video presentation can be found here.
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This site is constructed and authored by Richard Grinell from Coventry, England.
On a cold, dark night back on December 20th 1968, a young couple were enjoying a late night out, parked up in their Rambler, on a lonely gravel turnout, just off the unlit, narrow winding road of Lake Herman, when an unknown assailant shattered the tranquil night time air, gunning down both David Faraday and Betty Lou Jensen in cold blood and unleashing an unparalleled horror on a community, the like of which had never been seen before.