I got this from my friend, I thought it was pretty fun. Harder than the ones I usually get right away.

1. Create a 5x5 grid
2. Let S = Sheep, Let W = Wolves
3. Let W move like a Queen in chess (as far as it wants in a single direction)
4. Place 3 sheep on the grid with 5 wolves in the same grid so that no wolf will directionally intersect with a sheep
If you need anything to work with
look here.
Let me know how long it takes you guys to get it. Good luck!