# Gpt-6 Astra Breaks 1941 Enigma Message

> Gpt-6 Astra breaks 1941 German Enigma message without human intervention.
- Title: Gpt-6 Astra Breaks 1941 Enigma Message · Cryptocellar
- Summary: Gpt-6 Astra breaks 1941 German Enigma message without human intervention. Gpt-6 Astra independently cracked a 1941 German Army Enigma message that remained…
- Keywords: gpt-6, astra, enigma, german army, cryptanalysis, mvueh, ss-totenkopf, bundesarchiv, crypto cellar, message nr 172, message nr 173, sipvx
- Source: Cryptocellar — https://cryptocellar.org/bgac/the-mvueh-break.html
- Author: Frode Weierud, Crypto Cellar Research
- Read time: 1 min
- Topics: gpt-6, astra, enigma, german army, cryptanalysis, mvueh, ss-totenkopf, bundesarchiv, crypto cellar, message nr 172, message nr 173, sipvx
## The MVUEH Break
On 15 September 2026, Carter Leffen contacted me to request validation of a break of the German Army Enigma message MVUEH of 10 July 1941.
## Message Details
The message, sent by radio station 2ny, was received by ss-totenkopf quartiermeister ib at 17:30 on 10 july 1941 and logged as nr. 172.
## Unsolved Since 2005
Since 2005, the message has resisted all attempts to break it, making it one of the most challenging enigma messages.
## Previous Break Attempt
On 9 june 2017, alex shovkoplyas broke message nr. 173, sipvx, but the key differed slightly from the daily enigma key for 10 july 1941.
## Key Differences
The mvueh key uses a different wheel order: 253 instead of 512, and the plaintext differs by twelve letters from sipvx.
## Gpt-6 Astra Break
Gpt-6 astra independently broke the mvueh message using a repeated place name crib and developed enigma simulation software.
## Bundesarchiv Discovery
Gpt-6 astra discovered german bundesarchiv radio message collections rs 3-3/20a and rs 3-3/63b through its analysis logs.
## Professional Cryptanalyst
The ai break took two days, equivalent to weeks or months for a human researcher, demonstrating professional cryptanalytic skills.
## Key takeaway

Gpt-6 Astra independently cracked a 1941 German Army Enigma message that remained unsolved since 2005.