20041.dat level 7 - And then there were four (Lems)
From the screenshot, I can tell the solution is:
- build right lem to ceiling and then over the left block.
- build left lem to the steel and back.
- build middle lems over the block on the left
- Make every lemming a climber so that they climb the steel to the right to exit easily.
This is assuming that two lemmings fall from the middle and yes, 9 minutes is way to long for this solution.
I've not played this level yet, so, it works in theory
.