WOLVES & SHEEP

Draw a fence to protect the sheep from the wolves by joining dots with a single continuous line so that all the sheep are inside the area and all the wolves outside it.

Dots can be joined using only horizontal or vertical lines, and the fence cannot touch, cross or overlap itself in any way.

The numbers 1, 2 & 3 indicate that the fence must run along 1, 2 or 3 sides of the square formed by the 4 dots around the number.