Although perhaps quicker to describe than the actual effort involved in exploring it.  My co-worker and I took the Hydra concept (9 heads) and took the KRYPTOS letters out of K4 then split the rest in 9×10 segments.  We tried the straight K4 and even the rearranged (lining up the word Kryptos).  With such a small collection of letters it proved too easy for the software we used to find a match.  At first we thought we were onto something because it seemed that the best phrases we recovered could take the last letter back to the front.  In other words, this is what the phrase, “Kryptos is stinky” would appear as: Yptos is stinkykr.  We’re pretty sure this was artifactual from the program however.

We pulled some interesting words and phrases but feel this only exemplifies the ability to twist K4 enough to retrieve incorrect plaintext.  A fluid, concise plaintext message is required that makes sense in contex with the rest of Kryptos.  I personally haven’t seen anything yet.  A lot of gibberish, some jumbled phrases, a lot of dead ends.

So I’ve tried 7 letter segments and we tried 9 and 10 plus I tried some random length bits.

No guarantees but I’m willing to bury the idea of layered substitution ciphers.  If someone had the time they could easily brute force a large number of alphabets and see if any fragments of plaintext showed up in the gibberish.  That’s the only thing I see being capable of forcing an answer out of the ciphertext if it’s hidden in this way.

On to something new!

Kryptos Fan