Now you look surpise, I am glad I took a screenshot :P
Yeah it's not something very easy to know how much one must explain the whole mechanics, which for some puzzle games it is the point. On the other hand, at some point I didn't really know if I was doing something wrong with the mechanics, or if the implementation was a little buggy. But that's hard to know, especially for puzzle game, and even more in game jams ^^'
PS: I can remove the screenshot if you don't want any spoiler in the comment section.