Z13 Cipher Decoded

Encrypted & Decrypted With Complete Symbol Key

Published: February 8, 2026 — TheDecipherist

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PropertyValue
Date SentApril 20, 1970
Length13 characters
Header"My name is—"


Z13 — ENCRYPTED (13 columns × 1 row)

12345678910111213
1.AEN⊕⑧K⑧M⑧⚓NAM1.
12345678910111213


Z13 — DECRYPTED (13 columns × 1 row)

12345678910111213
1.AENDLSLMLCNAM1.
12345678910111213

Bold letters are decoded from symbols


Z13 Symbol Key

SymbolNamePosition(s)Decodes ToVerification
⊕Crosshairs (Zodiac signature)4DZ408: 4/4 = 100%
⑧Eight-ball / Circled 85, 7, 9LMath derived (only solution)
⚓Anchor10CCross-cipher verified
KLetter K6SZ408: 5/5 = 100%


Complete Decode Table

PosCipherDecodedValueSourceVerification
1AA0Plain letter—
2EE4Plain letter—
3NN13Plain letter—
4⊕D3Z408 verified4/4 locations = 100%
5⑧L11Math derivedOnly value giving checksum 6
6KS18Z408 verifiedK→S: 5/5 locations = 100%
7⑧L11Math derivedOnly value giving checksum 6
8MM12Plain letter—
9⑧L11Math derivedOnly value giving checksum 6
10⚓C2Cross-cipherZ340, Z32, Z13 all = C
11NN13Plain letter—
12AA0Plain letter—
13MM12Plain letter—

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