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The two remaining Zodiac cyphers are very short: 13 characters and 32 characters respectively. As the messages don't share a cypher with the other messages they could theoretically be anything.

The YouTube channel https://www.youtube.com/@doranchak/videos by David Oranchak, one of the people who solved the Z340 cypher, has some more details on this as well as how the Z340 cypher was cracked.

Recently posted in a similar thread about AI breaking a cypher: https://allthatsinteresting.com/zodiac-killer-cipher-solved

This is the forum thread where the person in question posted his theory:

https://forum.zodiackillerciphers.com/community/zodiac-ciphe...

Looks extremely unconvincing to me.

would really be incredible if it managed to pull the identity

now we're talking