State Your Position

Discussion of challenges you have already solved
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adum
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Joined: Thu Apr 19, 2007 12:49 pm
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State Your Position

Post by adum »

possible?
gfoot
Posts: 269
Joined: Wed Sep 05, 2007 11:34 pm
Location: Brighton, UK

Post by gfoot »

I notice efe has solved this too now. :)

So why is this challenge seen as being so hard? For me it fell out naturally from some Vigenere-style analysis - there are a few repetitions at multiples of 3 characters, and if you do frequency analysis on every third character you quickly see that the third, sixth, etc characters are all in the first half of the alphabet.

I guess recognizing that the other characters are abbreviations for US states requires some general knowledge... but it is at least easy to spot that they, too, come from a restricted set of digraphs.

I actually spent ages trying to find some representation of all the counties (?) within a state via letters, i.e. TNA would be the first (A) county within Tennessee. It took a while to see that the third letters were counts into the state's name.
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yes-man
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Joined: Fri Jan 30, 2009 5:14 pm

Post by yes-man »

Without the 'US' hint, this one is really hard.
Of course there is the title, but still.
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