What it does
The author’s study used nine historical cases, including a textbook example, plus synthetic traffic, and found no advantage from Jev ranking opening phrases. Live codebreaking needs a TypeSafe key.
Playable demos & bots
enigma-jev
Explore an Enigma codebreaking machine whose local search produces candidate decryptions for Jev to judge.
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How you can use it
Read the public research pages to see how a program can search for possible answers while AI judges the results. Here, the code tries Enigma settings and creates trial messages. Jev chooses among those messages or rejects them; it does not write the decryption.
A developer could borrow this separation for another task with a fixed set of candidate answers. Keep known answers for testing, and allow the judge to reject every candidate. Do not assume Jev improves the search itself: the author found no advantage when it ranked possible opening phrases.