Cipherday #81 · September 12, 2026
The answer to Cipherday #81
The full three-cipher chain from September 12, 2026, the public-domain quote it hid, and how each cipher worked. Today’s chain stays sealed until it becomes a past day.
The revealed quote
“Actions speak louder than words.”— traditional proverb
A plain reminder that deeds, not talk, reveal what a person truly means.
The cipher chain
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Stage 1 · Caesar · Shift of 19
Ciphertext
Khfx ptl ghm unbem bg t wtr.Decodes to
Rome was not built in a day.Every letter was slid 19 places down the alphabet; sliding it back the same amount restores the line.
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Stage 2 · Substitution · Keyword “EMBER”
Ciphertext
Jgttja stqnias cajj dqaet neis.Decodes to
Little strokes fell great oaks.A keyword scrambled the alphabet into a fixed cipher alphabet, so each letter always stands for the same partner — letter frequency gives it away.
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Stage 3 · Vigenère · Keyword “LANTERN”
Ciphertext
Lcgbsef dprto cbfdrk xyny wbkhj.Decodes to
Actions speak louder than words.A repeating keyword shifted each letter by a different amount, which is what lets one letter encrypt two ways; the right keyword resolves it.