Well, in fact, the levels on "The Lemmings Solution" website aren't correct. That's all!
I have the same levels than you Jazzem.
So, here I continue:
This CorrosionNumber of Lemmings: 50
100% to be saved
Release rate: 1
Time: 3 minutes
Skills: 1 climber, 8 builders, 3 bashers and 2 diggers
Good: Nice challenging level, but...
Bad: ... isn't an holiday level style and is a Oh no more Lemmings level. I would prefer to have this level and the other one keeping the same style instead of taking the levels of Oh no! More Lemmings!