GPT-6 Astra successfully solved a WWI German radio cipher using the ADFGVX method, decoding the message "AN ENGLISH CRUISER ARRIVED AT SEVASTOPOL ON THE ?4TH AN ALLIED SQUADRON FOLLOWS ON THE 26TH". The model used the encryption word "TRUPPENVERSCHIEBUNG" to generate a table that was then used to decode the message, revealing a historical event that had previously gone unsolved. AI summary
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