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This Cipher That Napoleon Used Went Unsolved For 217 Years. ChatGPT Just Solved It In Six Hours

  • Ella Spitz--Allthatsinteresting.com
  • published date: 2026-10-02 21:45:28 UTC

While the first of the message's 24 lines is in French, the rest is in a mix of letters, numbers, and made-up symbols so baffling that no cryptographer had come close to decoding it. The post This Cipher That Napoleon Used Went Unsolved For 217 Years. ChatGPT…

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