Homophonic substitution
AssessTechniques
A cipher method where multiple symbols can represent the same plaintext letter.
Why it's here
Placed in Assess: 1 article(s) of evidence from 1 source(s), led by research-stage coverage, with 1 in the last 30 days. Confidence 24%. Low accumulated evidence, so it defaults conservatively pending more signal.
Evidence (1)
- 6Hacker News·9/13/2026researchClaude Fable 5.1 deciphers a 370-year-old cipher
Claude Fable 5.1 reportedly solved Sir Thomas Urquhart’s Cyphral Distich by using the book’s own structure as the key, rather than an external cipher alphabet. The same approach was then applied to Urquhart’s larger Cyphral Octastich, yielding a mostly complete plaintext and suggesting a historical text-based encoding method.