These addresses could be just random addresses created by the bot who seem to have been programmed by somebody knowledgeable about bitcoin to send to other addresses. This could have been done for recreation or for some purpose like safe keeping the coins from hackers. We will never know until one person will come in and say I have done this! Anyway thank you for your post.
look around, and perhaps read through earlier portions of the thread, the creator of the puzzle did in fact come out and specified the why, and how of it (explaining about the 2^increasing) in fact when it was pointed out to him about anything beyond 2^160 was pointless he then moved the btc from those higher addresses into the remaining lower ones. The important point here is that A) this person MUST be the creator of the puzzle since how else could he have moved the btc? B) He WANTS people to find it.. else it would be removed. - The reasoning if I remember correctly was more mostly about encouraging people to delve into the crypto part of it all. and maybe a little bit of "let's just see."
Use a search your engines luke.. the google flows strong within you.. use the google (or you know.. something like that.)