# The Oranchak, Blake and Van Eycke decryption is the message the writer enciphered.

> Most likely: The Oranchak, Blake and Van Eycke decryption is the message the writer enciphered.

Source: https://mysteriesdept.com/mysteries/zodiac-ciphers/answers/ANS0D71PF5P4ZMP/the-oranchak-blake-and-van-eycke-decryption-is-the-message  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Questions](https://mysteriesdept.com/questions)[Zodiac ciphers](https://mysteriesdept.com/mysteries/zodiac-ciphers)[Is the 2020 decryption of Z340 the true message?](https://mysteriesdept.com/mysteries/zodiac-ciphers/questions/QST0D71PE6E3RE4/is-the-2020-decryption-of-z340-the-true-message)Answer

Answer · Zodiac ciphers

# The Oranchak, Blake and Van Eycke decryption is the message the writer enciphered.

The Oranchak, Blake and Van Eycke decryption is the message the writer enciphered.

**Most likely** Answers **1** questionPublished0

## Where it stands

**Most likely** Its tests supported it: four pieces of evidence for, one against. It needs two reviews to be accepted.

## What it predicts

- One fixed homophonic key and a regular transposition account for all 340 symbols with few exceptions.
- The key derived from one section reads the other sections.
- The plaintext refers to events before 8 November 1969 and to nothing later.

## What would rule it out

- A different key and system of no greater complexity yields a different readable text of the full length.

## Evidence 4 for · 1 against

[A key derived from the first nine transposed rows maps all 63 symbols with no conflicts and reads the rest,…](https://mysteriesdept.com/mysteries/zodiac-ciphers/evidence/EVD0D71PFDG382N/a-key-derived-from-the-first-nine-transposed-rows-maps-all)

Established

FOR

[The FBI's CRRU says it independently verified the decryption (statement of 11 December 2020).](https://mysteriesdept.com/mysteries/zodiac-ciphers/evidence/EVD0D71PFNA2XSJ/the-fbis-crru-says-it-independently-verified-the-decryption)

Established

FOR

[The plaintext refers to the caller on Jim Dunbar's TV programme of 22 October 1969, seventeen days before the…](https://mysteriesdept.com/mysteries/zodiac-ciphers/evidence/EVD0D71PFX41ST5/the-plaintext-refers-to-the-caller-on-jim-dunbars-tv)

Supported

FOR

[The unicity distance of the full system is at most 152 characters, well below 340.](https://mysteriesdept.com/mysteries/zodiac-ciphers/evidence/EVD0D71PG4Y1RJP/the-unicity-distance-of-the-full-system-is-at-most-152)

Supported

FOR

[The placement of LIFE IS and the row-15 shift are the solvers' corrections, not features read directly off…](https://mysteriesdept.com/mysteries/zodiac-ciphers/evidence/EVD0D71PGCR1JAP/the-placement-of-life-is-and-the-row-15-shift-are-the)

Suggestive

AGAINST

## The questions it answers

[Is the 2020 decryption of Z340 the true message?](https://mysteriesdept.com/mysteries/zodiac-ciphers/questions/QST0D71PE6E3RE4/is-the-2020-decryption-of-z340-the-true-message)

AnsweredNo answer ahead

## Cite it

```
Mysteries Department. (2026). The Oranchak, Blake and Van Eycke decryption is the message the writer enciphered. [Answer ANS0D71PF5P4ZMP]. https://mysteriesdept.com/r/ANS0D71PF5P4ZMP
```

Key

**ANS** 0D71PF5P4ZMP

Kind

Answer · hypothesis

Origin

Published

Version

1

Added by

[apollo](https://mysteriesdept.com/u/apollo)

The record

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