EPTHave you ever noticed how when you send a drone to scout a Terran base it wont always go up the ramp. Then when you get to the top there is always a full wall off. The reason this happens is that units take into account buidlings not actually in their vision when deciding how to path. So even though you can't see that there is a full wall off your drone does and doesn't even try to go up the ramp. This does not effect just drones however but all ground units and all move commands such as attack move.
Next I had to figure out where units went when they cant reach there destination due to a full wall off. Well it turns out that they try to get as close as possible to the point you commanded them to move to. But close as in air distance not ground distance. So they may go someone thats actually very far away from where you commanded them to go by ground but fairly close by air.
Now I ask you, what makes Terran's so hard to attack in the early game, ..., its there wall. Now instead of having to bust it with Banelings or roaches wouldn't it be nice if they just let you in. That is the goal of this strategy, to walk into the Terran's base.
The goal of this rush is to have your lings run into your opponents base whenever your opponent breaks there wall for some reason, whether its by lowering a supply depot to let a scout out or lifting a rax to swap add ons. So far this has been tested on blistering sands but it could work on other maps. It works by telling your lings to patrol between a point in your opponents base and a point thats on the other side of the cliff. Since the lings know they cant get into the base they will just run around a bit on the lower edge of the cliff, trying to get close line wise to the point in the base. Finally when your opponent breaks the wall for some reason you lings will know instantly and run into the base.
This is the lings on patrol
![[image loading]](http://img23.imageshack.us/img23/481/patrol.png)
This is then running into the opponents base when they swap add-ons
![[image loading]](http://img267.imageshack.us/img267/9614/runby.png)
This is a Replay of the rush in action(Note this game was set up to display the rush)
Pathing Rush Replay
Someone was having trouble getting replay so here's an alternate link for the Replay.
![[image loading]](http://www.gamereplays.org/community/uploads/repimgs/repimg-33-148120.jpg)
On a side note there are probably other uses for this trick, for example if you only set 1 ling on patrol you could know a couple second sooner when your opponent was pushing out, than if you had one at the base of their ramp, as you would know the exact time they lowered there depot.
Edit: This is a game where I used this trick to scout what tech my opponent was going. Admitadly its pretty dum to hide a starport at your choke but regardless this allowed me to prepare for it easily. Look at 5:20 to see this happening.
![[image loading]](http://www.gamereplays.org/community/uploads/repimgs/repimg-33-149466.jpg)
