Eventually I got down to 2 off, it had taken a few weeks but I couldn't see how to get to 68 steps, then I got it. But for the life of me I thought this was the path I was getting 2off at. Bizarre. Good head scratching level.
For me, this one is one of the two, among ''Tutorial'', that is much harder than the rest.
Haven't solved yet.
EDIT: ashamed that I needed 47 tries, was really stupid here, as I see now.
Very nice level! :)