No real tricks to this one, it was quite repetitive. I was afraid at first that I would encounter a 2- or 4-off at the end, and that I would miss some minor optimization earlier, but there was none of that. A little uninteresting.
Fastidious... I had the unluck to lose 2 steps on first try and had to redo it all... I would have given up if not correct on 2nd try. Am too lazy for that LOL
