GPT-6 Astra independently broke Enigma message MVUEH, unsolved since 2005
Crypto Cellar Research (HN 731 points)·medium signal
On Crypto Cellar, Enigma researcher Geoff Sullivan confirmed that the key and plaintext for the 10 July 1941 SS-Totenkopf message MVUEH are correct. Carter Leffer only pointed GPT-6 Astra at the list of unbroken messages. The model chose MVUEH itself, guessed that the already-broken message SIPVX held nearly the same plaintext, and dealt with transcription errors and a rare left-wheel turnover at letter 72. The HN thread reached 731 points.