ZODIAC CIPHERS
Richard Grinell, Coventry, England
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THE CIPHERTEXT OF Z13 AND Z32

4/18/2020

 
PictureClick the image above to watch Dave Oranchak analyze the claimed 340 solution by Robert Graysmith
It is without doubt that Dave Oranchak of Zodiac Killer Ciphers could explain the cryptograms and codes of the Bay Area murderer far better than me, but I am sure he would agree that the Z13 and Z32 codes, without further input from the killer, are effectively unsolvable. One is simply too short, while the other has only three repeating characters in a 32 character code. On the left is a link to Dave Oranchak's latest Youtube video, examining the faulty techniques employed by Robert Graysmith in attempting to decode the infamous Zodiac Killer 340 cipher. Just to be clear, the following examinations of the April 20th 1970 and June 26th 1970 codes are not endorsed by Dave Oranchak.

Regarding the Z32, several options exist: [1] The Zodiac Killer supplied us with a key to the code [2] There was no key supplied because the characters were not chosen for purpose (in essence they are gibberish), [3] There is no relationship between ciphertext and plaintext whatsoever, but the code has meaning only in relation to its length (ie:32 characters), or [4] There is a limited relationship between ciphertext and plaintext, but not in its entirety. When we look at the remaining communications subsequent to the 32 character offering, it is difficult to see how these could provide any explanation with respect to the 29 unique characters contained within Zodiac's Button letter code.

In a previous article, we showed how the Zodiac Killer was able to provide an answer to the Z13 and Z32, and a superficial answer to the 340 cipher in just three consecutive communications from July 26th 1970 to October 27th 1970, all in his own words (paradice and slaves visible on the "canvas" of the 340 cipher). Those three answers were essentially Paradice and Slaves, Fk, I'm crackproof and Radians and 5 inches along the radians (to be coupled with map supplying the value of 4).

A limited correlation was shown between ciphertext and plaintext in the Z13, in that the beginning of each word (component) appeared to have a relationship with each of the circled eights. The first 8 began the Fk element, the second 8 began the I'm element, and the third 8 began the crackproof element. Additonally, the letters K and M from the Fk, I'm crackproof phrase, correlated nicely with the existing K and M already in the Z13 code and completed the introduction of the April 20th 1970 letter to "This is the Zodiac speaking. By the way have you cracked the last cipher I sent you. My name is Fk, I'm crackproof" (nobody seriously believed he would give us his full name). Therefore, at least 5 ciphertext characters appeared to have some purpose in relation to 5 plaintext characters, much like the October 27th 1970 Halloween card showed a distinct correlation to the 340 cipher "canvas". I couldn't help thinking that the same relationship between ciphertext and plaintext may have existed in the Z32, in respect to the beginning of key words within Radians and 5 inches along the radians (highlighted in red).

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The first thing to notice regarding these four key words, is that "radians" is represented by the letter "C" on both occasions. "Inches" and "along" are represented by a "black triangle" and the letter "X". Bearing in mind we are looking for an angle and distance subtended from Mount Diablo to discover where the "bomb is set", this is probably where we should be looking for our answer.

Take a look at a close-up of the Mount Diablo map provided by the Zodiac Killer (shown above). Two things jump out immediately - notably the "cross" or "X" symbol, in which the Zodiac Killer made a conscious decision to not draw over with his crosshairs. And secondly, the "red triangle" (in part) representing Mount Diablo State Park. I have also added an additional symbol in the top right corner, showing that a mountain is often represented by a triangle. In the Zodiac crosshairs from the July 26th 1970 Little List letter, the killer added a "circle" around the circumference, set at 246 degrees or 4 radians and magnetic north (part of the answer). 


A line subtended from the mountain summit of Mount Diablo (triangle symbol) regarding radians and inches, radiating from the center of the crosshairs, cross or "X" symbol, through the circle on the circumference positioned at 4 radians and magnetic north - and then traveling 5 inches along this 4th radian -  is the approximate position of where the bomb was to be set. You will notice the correlation between the blue highlighted words and their relationship in the Z32 code. The beginning of "radians" is twice represented by the letter "C", the beginning of "inches" represented by the "triangle" and the beginning of "along" represented by the letter "X" of Mount Diablo. We are traveling a set amount of inches from Mount Diablo (triangle), along a line subtended from Mount Diablo (X formation), through the circle of 4 radians.  

Of course, it would be crazy to claim this was Zodiac's intention when designing the Z32 code, rather an initial and speculative look at the characters he used in relation to the plaintext solution of Radians and 5 inches along the radians, and much like the analysis of the Z13 code mailed on April 20th 1970. The Zodiac Killer had the option to design his latter two ciphers based on nothing more than their character total, but this isn't half as much fun as dropping in a few clues along the way.

THE MOUNT DIABLO MAP AND CODE SOLUTION
   THE ANSWER TO THE MOUNT DIABLO CODE

Janet M. B
4/24/2020 10:29:31 pm

Solution to Z13? I based it on several of his other ones that were allegedly cracked.

My name is:
A WWII KOREA NAM (i.e. My name is war) [vet]

I believe he was a three times war vet, and it could be that his identity would have been easier to reveal at the time by cracking this code, as well as it symbolically alluding to the significance of war playing a part in the “making of a killer”. At the time, not too many people had gone to these three wars. I’ll get into that later… maybe (I have a theory. I followed a suspect's steps to where it ends in CA during the ZODIAC killings)

How I got to this:

– He replaces the circle w/x inside with different vowels in this case.
– He sometimes interchanges W and M; R and M; and A and I; A with W; O with N; N with E; E with W. He sometimes replaces triangles with A or W.
– He at times has left certain words as is, or almost all of it as is (in this case NAM) to confuse, and in the same way, has used the same letter to replace another- again, to confuse. I also think he misspells to confuse, not b/c he doesn’t know how to spell.

A = triangle = W = E = N

A - W W I I - K O R E A N A M

I did a lot of research on this person, and his different ever-changing codes. I had very little to do during COVID, and I played around with codes when I was a little girl, and loved making codified letters... but I could be wrong.

Chad William Burke
6/29/2020 09:23:19 pm

The Gaikowski solution

Split alphabet cipher

My name is -----

AEN⊕♉K♉M♉λNAM
GYKEATAKAPYGR

R GYKE ATAK A PYG

AEN⊕♉KMλ
GYKEATRP

888 in English gematria

JD Acosta
7/30/2020 11:49:29 pm

The solution to Z13 is AENthatsmyNAM
A is the first letter os Arthur, E is the almost center letter of Leigh, N is the last letter of Allen. So was Arthur Leigh Allen the Zodiac?

Chad William Burke
7/3/2020 08:03:47 am

Really like this one Richard. Don't mean to spam. You can delete some older comments.

My name is -----

AEN⊕♉K♉M♉λNAM
AGT⊕ENOKIOTAK

KATO IKONE ⊕ T.G.A.

AENKM. ⊕♉♉♉λ
AGTNK. ⊕EOIO

Curses his likeness (the sketch) Greek key concerns slaves to god.

Chad William Burke
8/3/2020 05:27:46 pm

Split Alphabet cipher - Backwards - 2 keys

My name is -----

MANλ♉M♉K♉⊕NEA
ANANOMOSO⊕CGL

ANANOMOS O ⊕ C.G.L.
"No name the"

MANKE λ♉⊕
MLCSG NO⊕
"Bastard"

Roger
9/5/2020 04:14:01 pm

I agree. Place the letters around Tim Holt's 12 sector death wheel. You get a very simple wheel resembling a Caesar cipher which is actually not a Caesar cipher. It is just a simple substitution of letters from one sector to its "geographical" opposite. The only two symbols that fail to match with corresponding letters are the crosshairs symbol and the other non-alphabet symbol, which resembles the Aries sign. They have no corresponding alphabet value. They match each other, so effectively cancel each other out. They are null or zero, which can be represented alphabetically by the letter "O". Remember, on the compass rose on the map, Zodiac told us that the center of his map is Mt Diablo where magnetic north is to be set to zero. So the Zodiac symbol is "zero at North", hence "N0" or "NO".

So if you read around the wheel using the opposite sectors to give the substitutions, the most likely solution is "No Name No Name" repeated over and over. No matter how many times you spin the wheel or in which direction the result will always be the same. "No Name". It is like a dog chasing its tail.

Should we be surprised that he would not reveal his name? I am not.


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    The Zodiac Killer may have given us the answer almost word-for-word when he wrote PS. The Mt. Diablo Code concerns Radians & # inches along the radians. The code solution identified was Estimate: Four Radians and Five Inches To read more, click the image.
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