Well it took numerous attempt but i figured out the key game is get at many sheep as possible in bunch and than move them to pen.
The difficult with this game where point the cursor it should always pointed in opposite direction of the sheep for example if sheep is in the corner than position the mouse toward the bush push the sheep away from the corner. The higher the lever the aim quickly bunch all the sheeps in bunch, you will lose 4 or more sheep every level but as long you get majority you will score.
