I thought odd one out was pretty easy compared to some earlier ones. I think the night one with two goats and 4 fences is impossible.
Herding Hero is a puzzle game about a herding dog whose tasks can get quite challenging. There are over 50 levels with varied mechanics, and a level selector makes it easy to skip around if you are stuck.
Created by Joel Fox and Mike Gelbart
Thanks to Karoo, Hunkydory, and Jack Kutilek for level feedback