Sort:  

Those houses have people visible from the doorway, so any passing zombie will see them and enter the house provided we don't lure them elsewhere.

I would strongly suggest moving past the cross-road as soon as possible because it will become progressively more difficult as more zombies are killed. Eventually, we will need to lure zombies into the house where the boy with the red cap is because there is nobody visible from the doorway; or we can simply kill those people ourselves and be done with it.

I think P1 might have to get killed to get out of the house he's in.