2 years ago, I gave up on this level as I was 2 off and enable to cut the last 2 steps.
Today, I came back to it and solved it within a few tries. Now to be honest, I can see what I did different to save the 2 steps, but I don't understand why it's a saving. For me a case of "seems longer, is shorter".
(13 years ago) I cannot believe I solved this ! 95 tries. Was always 4 off or 2 off ...
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EDIT, 2022, Sept. 25th: This is for me the hardest level in this world of pipelining, but I finally got the 65, too. It was the last level, in this World, for me. Thx again. I feel I've learned.
As advertised, the bottom half of this is an excellent pipelining trick! Super fun to solve through. The top half of the level is also present. An easy 5 star despite this.
Not sure if I have done this level in the past, but after reading manti's comment before doing this level in Pathology, I feel lucky that I can do this in my first try :)