Very good. Quite clean, exquisite use of this advanced technique with some flair in the top right as well, elevating this mincing meander into a full on stride in my eyes.
I got it fast because I looked at the board and it was clear that a preparation is needed for the way back, with not many alternatives available. For me, only the upper right corner needed optimization, the rest was straight.
Surprised this doesn't have a review yet. It's a very nice implementation of "forced to bring a block back with you" optimizations. A bit constrained options-wise so it's easy to figure out what you have to do on the return trip, but the upper right corner is fantastic regardless.
