It took me a moment to understand what the constraints meant, which says more about how tired I am than it says about the design, which is great! I don’t want to minimize the cleverness of the puzzle design, but I think it’s a visualization of a finite state machine. Not a novel challenge but a clever way to display it for sure.
The one aspect that took me a bit to figure out was whether, to move between the house and the tree, you needed someone on BOTH the bone and the flower or just one of them. (It turned out to be both.)
