Woooow, this was great!
At first I had troubles to even come through, but when I did, it was well over 180. Then I slowly cut down steps, changing my route, trying all sorts of things. Got badly stuck at 168, then at 162, as well. After that it still took quite long, to shave off more. I went in steps of two, all the way to 152, which is really nice! :)) Great find, Carl!
I find the 82 path here pretty tricky. :)) Was good fun, looking for it. I had probably found everything from 92, then down in 2-move cuts. :)))
EDIT (12 days later): Had HUGE problems finding mathmasterzach's 76. And now it seems easy. :))
Carl's 140 is a great find, here. Really enjoyed looking for it. Got all sorts of routes, was stuck at 148, for quite a while. Then got 146 and right after the 140.
EDIT (a bit later): Manti's 130 made this even better! Great find! And hopefully optimal, now.
Insights