I've just read the stuff about "exploiting" the AI that goes back and forth.
The definition of "exploiting" and "walling" here is way to narrow.
I got into this bug with only 3 zerg towers (can't remember their name) and a bunch of zergling. Not even in a narrow space. But that's just a pretty obvious move, to place defences in front of your base. I wasn't trying to wall at all, it wasn't on a ramp or anything.
Also, the AI obviously see burrowed units. I tried burrowing zergling further away from my defences. I wanted to let the ai approach my defences, then use my lings to cut their retreat. But instead, the ai started turning back when they arrived on my burrowed zerglings instead of going near the defence like before (although they had no detector). And this was with NO building, and in the middle of a large area.
Obviously, the problem is not with walling. It's with the AI turning back when outpowered, and attacking again with the same unit a few second later, and turning back again and so on and so forth.
Aside from that annoying bug (such a strange comportement can only be considered a bug) I was really pleasantly surprised with the gap from the V3 to the V5.5 AI.
Not that it became really hard, but at least it now goes air, and use advanced units. Before, it would only use the basic units (zelot / stalker, nothing else).
Now it actually attacked with a bunch of carriers. That is pretty enjoyable. Not realy a challenge in 1V1, but a good warming up until the multi is actually playable.
So thanks a lot. I'm waiting for the v6
