On #93, store five blocks in the upper/upper-right area as you fill in the rest except the top six buttons plus the middle circle you drew. Then bring down one block for that middle circle. The rest falls in place easily. I found the trickiest thing in this level to be how to start extracting blocks in the beginning.
Undoubtedly all the sokobans in the set are supposed to be solvable, but with #92 it would be nice to get a confirmation that the CC level is also. The problem seems to be that Chip ends up in a place from where he can't reach the exit.
I've only mainly played the levels that others have asked tips for so far, but it has been fun. I am amazed by how great the names of the levels are! I enjoy the aesthetics too, though I have loved the parts the most when some of the CC specific elements have played in the solution somehow, like #78. With that in mind, I wouldn't have minded seeing some small things added here and there, like fake blue walls when the surroundings had real blue walls, or even a monster to dodge every now and then. The chips in the levels are nice. I think this set will be a classic even though it will only excite a subsection of players