AI is a vague term. What we are trying to do is capture the human mind's ability to solve problems in general. Otherwise it's like solving a crossword puzzle and calling the solution AI. It's the solving that is of interest not the solution. These game playing algorithms are all trained on human games with algorithms designed by humans. The only computer contribution is the ability to churn through permutations really quickly, which is not intelligence. Intelligence is the reduction in state space so it is small enough for the churning to be of value. No AI can do this state space reduction for us yet. We always need a human.