For easy victory over the CPU under any difficulty setting, place eight to twelve 
villagers into three control groups. Then, have two control groups working on gold 
and one working on stone until all of the stone piles and gold piles are gone. Next, 
build at least two of every building and upgrade everything as fast as possible. If 
done quick enough you should be able to either swarm your enemy or surround him with 
castles.