Featured Puzzle: Zombie Invasion

Oh no! A zombie horde is terrorizing the town! You must quickly build walls to keep them at bay! Draw walls to create regions that contain only people, or only zombies.

• Regions may not be empty and may not contain both people and zombies.
• Some regions may be irregular in shape.
• Walls must start and end at the edge of the grid and may cross each other at any intersection that doesn’t have a post.
• Wall lines must travel in a straight line except at a lightpost (the dots), where they are allowed to turn 90 degrees.
• Some lightposts may be decoys. You are not required to use all (or sometimes any) of them.