GPT-6 Astra Solves a WWI German Radio Cipher

Scienceblogs.de, a German science blogging portal, includes a relatively famous list of 50 unsolved ciphers, which range from cryptograms published by serial killers to the famous Voynich manuscript. Among these ciphers is a set of German radio messages from World War I that were encoded using the ADFGVX method. This method is illustrated by the following example using the word “HOUSE” as the key:...