Opus Magnum (from Zachtronics of SpaceChem/Infinifactory fame)

No, just the main 5 chapter campaign. It should be in the options menu, “show top percentile”.

I should clearly come back to all these early puzzles every now and then. Alcohol Separation is just fascinating. I thought the theoretical limit would have been 17 or 18, but it appears hard to arrange for reasons kind of unique to this puzzle. It just has to be done with a 9 cycle period, which I don’t remember using in any other serious solution. Seeing all those wasted cycles makes it hard to cheer for the 22 that I actually could get.