It would appear to be a Genius. Although I think the real problem is that I've been using it for ages (before I got back into Lemmings) and I played some RTS games... and those tend to be quite rough on the keyboard.
But before this gets dragged too far off topic...
Flurry 8 - Vacation in GemlandLemmings: 50
Save: 50 (100%)
Time: 3 minutes
Release rate: 1
Skills: 1 climber, 8 builders, 3 bashers, 2 diggers
Good: Some variety of methods available for clearing the obstacles. A refreshing break from the repetitive Christmas graphics.
Bad: Wrecks the difficulty curve worse than just about any other Lemmings level. Plus you have to use a hero lemming to complete the level - which leaves the other 49 in a tight space, from which you have to click one that's facing the right way. And if you don't know the trick, that's not fun.