I discovered Opus Magnum 2 weeks ago and this is my first time optimising for instructions outside of a cabinet. I can't wait to see how I did! If you ask me, I'd say I reached the local minimum for this specific way to rotate the flake. I almost had it in 17 with an alternative rotation and input suppression, but I couldn't grab the last arm without hitting something. I'm kinda glad it didn't work, I find this submission much more elegant. I've seen some of last year results tho, I'm convinced someone will get it in 14 or less, I just have no idea how.