94 tries.
Even after I'd stumbled on the right path round try 70, it still took me another ~20 tries to optimize it.
Feels more like a Hard 5 to me, but whatever it is it is brilliant to the core, and beyond.
I could only see 1 route at first - that was 8 short. It took a bit of working out, but when I worked out a new route - I got it the next attempt - nice level ....