Hey, thanks for playing! Interesting, I did have the „click on node“ navigation in an earlier version, but it felt more boring than actually walking around. Switching paths at intersections is tricky now, agreed. And thinking about mobile… I‘ll reconsider.
The puzzles should always be solvable, what you see is a randomization created from a solution configuration. Admittedly, I have thought more than once that there is a bug, but eventually they all worked out :) Maybe I could add a hint system.