[ QUOTE ]
There exists a rule based strategy...

[/ QUOTE ]

I hate to nitpick, and correct me if I'm wrong, but I think OP was talking about a static rule-based strategy. That's what most people are referring to when they talk about rule-based strategy.

I suppose if you "roll out" by brute force every possible playing style and have an if-then clause to every situation, you could have a rule-based strategy... But otherwise, it's a decision-based strategy using mostly heuristics.