OpenAI GPT–6 Astra breaks Enigma message that has resisted solution since 2005
5 hours ago
- Carter Leffer requested validation of a break for the German Enigma message MVUEH on 15 September 2026.
- The message MVUEH was sent on 10 July 1941 by station 2ny and received by SS-Totenkopf Quartiermeister Ib, failing all break attempts since 2005.
- Alex Shovkoplyas broke message SIPVX (Nr. 173) in 2017 but with a different key, not enabling the break of MVUEH.
- The MVUEH key was completely different in wheel order (253 vs 512) and plug connections, but its plaintext was nearly identical to SIPVX with minor differences due to errors and repetition.
- Transcription errors and a rare left-hand wheel turnover at letter 72 complicated earlier break attempts.
- GPT-6 Astra autonomously broke MVUEH after being directed by Leffer, using the repeated place name ROSENOW as a crib.
- GPT-6 Astra developed Enigma simulation and Bombe software to achieve the break.
- The AI discovered and utilized Bundesarchiv references (RS 3–3/20a and RS 3–3/63b) from its own research, behaving like a professional cryptanalyst.
- The break was accomplished in two days, a task that would take a human weeks or months.