Friday, February 15, 2008

Survival of the Sheep Puzzle

Survival of the Sheep Puzzle
There is an island filled with grass and trees and plants. The only inhabitants are 100 lions and 1 sheep.
The lions are special :
1) They are infinitely logical, smart, and completely aware of their surroundings.
2) They can survive by just eating grass (and there is an infinite amount of grass on the island).
3) They prefer of course to eat sheep.
4) Their only food options are grass or sheep.

Now, here's the kicker:

5) If a lion eats a sheep he TURNS into a sheep (and could then be eaten by
other lions).
6) A lion would rather eat grass all his life than be eaten by another lion (after he turned into a sheep).

Assumptions :
1) Assume that one lion is closest to the sheep and will get to it before
all others. Assume that there is never an issue with who gets to the sheep
first. The issue is whether the first lion will get eaten by other lions
afterwards or not.
2) The sheep cannot get away from the lion if the lion decides to eat it.
3) Do not assume anything that hasn't been stated above.

So now the question:
Will that one sheep get eaten or not and why?