Oh, my. 12 steps off (for 543) in 15 tries. This will probably turn a SGM (pending 5, atm).
Very interesting, but I have no clue, where to find the missing steps. Will keep trying ...
This indeed gives some annoyance. This could be made shorter. If you want to save time, take Manti's advice.
As expected, I got a 2 off before I solve...
Insights