Successive division
Number of lemmings that die: 0
Available time: 04:00
With the first lemming from the left entrance, stamp down in the middle. When he's deep enough, scoop. Wait until he walks to the left and scoop again. Do the same thing again. Now wait until he walks to the right and scoop. Now stamp so the lemmings can get to the exit.
Last edit: Wednesday, 14 May 2008.
Main source: own words.
Graphics: Lemmings 2: The Tribes, Amiga platform.