LogFAQs > #970332535

The biggest exploit with Starcraft 1's AI is the CPU seems to know where all the resource caches are, but will only try to expand if they run out of resources in their starting base(s). If you start expanding early and put moderate defenses on those expansion bases, combined with the fact the CPU has a set "escalating" attack pattern on your main base, and you can basically force the CPU to stave itself of resources and take them over at your leisure. Slow, but almost foolproof strategy except for in some of the later maps in brood war.

I only played a little bit of Starcraft 2, but I remember it was pretty much a cake walk until the last Terran mission (which is when I stopped).