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2 votes

Why did she choose O6G?

The various pictures (as solved by others) are: Using hints 2 and 3, you can take one letter from each of the above, forming an 8 letter surname, chess related: Then:
JS1's user avatar
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3 votes

Why did she choose O6G?

Not an answer. I agree. OSCAR seems fit for the first hint. I'm not very sure of my approach, but this is how I think it could be. She chose O6G. The surname is 8 letters long. So... OSCAR_ _G Now the ...
Passionately Illogical's user avatar
6 votes
Accepted

They used to sing together

The singing duo are:
PDT's user avatar
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3 votes

Was Exhibit 5 of the Chaocipher ever solved, and if so who solved it and when?

You were not able to find a solution to Exhibit 5 because it was not "solved" in the usual sense. The plaintext and keys were found through ordinary research and not cryptanalysis. During a ...
codewarrior0's user avatar
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3 votes
Accepted

Was Exhibit 5 of the Chaocipher ever solved, and if so who solved it and when?

Yes The solution was published online in January 2014 in Chaocipher Exhibit 5: History, Analysis, and Solution of Cryptologia's 1990 Challenge by Jeff Calof, Jeff Hill and Moshe Rubin. With the hint ...
Beastly Gerbil's user avatar
4 votes

bmf kgf dc yufy ckd yb crysn

It's most likely undecodable (due to undercluing), but I would like to give the benefit of the doubt to OP and say that they transcribed the hints and cipher correctly. (so not OP's fault) Here's how: ...
CrSb0001's user avatar
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