"One little mistake" strikes again! Upon realizing my mistake... This level has like a billion solutions. I would love a refined version of this that only has one solution!
Solved it fast enough to demote it from professor to PhD. This is a pretty strong puzzle where most of its difficulty is the first solve and not the optimization.
I found the CarlAndrey route before the Reachy route. I found it instantly as soon as I made a certain realization. Not entirely sure what the original route might be.
A fun puzzle to break into smaller pieces. I found what I thought was the optimal order to the parts, then I optimized the individual parts. Did it fast enough to demote it from professor to PhD!
Insights