
Napoleon's 217-Year-Old Mysterious Letter Cracked Using AI In 6 Hours
An AI engineer using OpenAI's GPT-6 Astra cracked a 217-year-old encrypted letter sent to one of Napoleon Bonaparte's generals in 1809. The AI transcribed 1,300 handwritten symbols and decoded the message in roughly six hours from a single image and prompt. The decoded letter revealed French and Austrian troop movements on the eve of war and filled in a missing phrase from Napoleon's memoirs.