LT4 - May 1, A Fine Day Mystery Cache
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Difficulty:
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Terrain:
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Size: 
(micro)
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Less Than Infinity (Infinity Lite) series - caches are not at given coordinates. Caches are red, blue or purple bison tubes hanging around eye-level (+/- a foot) in trees along/near Forest Road 462.
This is an attempt to help those who do not know where to start with many of the nearby Infinity series. It also is an attempt to define my genre: poor-man's, mathematically-oriented geo-art for those who like to solve puzzles and hike, bike, ride horses or noisy vehicles in the Cibola National Forest wilderness areas in the East Mountains.
The caches are colorful and easy to spot once you locate the right tree to circle. The puzzles are straightforward once you have the right tools (which are mentioned in the descriptions).
The affine cipher is basically an expansion of the Caesar cipher; instead of a simple N rotation (addition), this is combined with a multiplicative rotation. So you need two keys (numbers) to decipher an affine: the first multiplies the number associated with the letter (A = 0, B = 1, ...) the second key is added and the result is modulo 26 (the remainder after dividing by 26) so the result falls between 0 and 25 and can be converted back to a letter.
So you can either do this long hand or use an on-line cipher solver. I use rumkin.com/tools/cipher, remember, you want to Decrypt. I recommend copy and paste to minimize typos:
North: skpisr apcv qvfivvn atxi ytpos apcv atxi npm jpoxsvn
West: tov kxoqivq npm qvfivvn opovsvvo ytpos atxi vpfks npm jpoxsvn
*** Congrats to cyclegreen for FTF!!! ***
Additional Hints
(Decrypt)
chmmyr: obgu xrlf va gvgyr (jung zbagu ahzore vf gung?)
Pnpur: va gerr oruvaq obhyqre