Apophenia.

Apophenia.

One for the textbooks.

Apophenia.

I call these dime store detective novel type solves, "Indiana Jones puzzles", they’re fantasy. The Three Musketeers thing is a serious stretch, I mean you really have squint to get that one. Also it’s not contextually relevant and it’s extremely obscure in this context. "backwards" and "mispelt" and profoundly obscure, this is some cerously tortured reasoning. It’s not credible.

The ZODAIK thing though is credible. I have no idea what it’s meant to represent, but it’s either a red herring, or a clue, it’s sure as hell not an coincidence. What it means though is anyone’s guess.

By the way have you cracked the last cipher I sent you?

Now you’re making sense. This reasoning has merit. It’s speculative, but it’s not far fetched to propose he may have been giving a subtle nudge that the Z340 was relevant to the Z13. And using the Z340 to crack the Z13 is one of the few ways available to him to construct a solvable 13 character cipher, by process of elimination he would seem to have few other options if this was desire.

Apophenia.

Hello and a happy new year
i have made an attempt to decrypt the Z13, I know little about cryptography, I just made a wild guess based on what he could be saying. He would not reveal his name of course.

So if you look at the letters involved visually, you have pretty much the same letters in the code and my solution, you could say that I took the visual aproach.

The result will give you something
that is
My name is …. "not very common", or "not that common."

The idea is that zodiac gives a clue about his name that is unusual.

There is an unusual suspect name, it is
Xenophone l Antony

While at it, combining Z13 and Z340 we get the name XENOΦON
in greek Φ=PH
XENO-PH-ON

Another coincidence is that XENOPHONE the X is pronounced Z like Zodiac (ZenoΦοn = XenoPHon)

In this version I have added the name backwards,
meaning Antone (Anthony)