I'm guessing it generates the tree (2 levels deep) and then uses an evaluation function to choose the best branch. Not too far off from a modern algorithm, exc

I'm guessing it generates the tree (2 levels deep) and then uses an evaluation function to choose the best branch. Not too far off from a modern algorithm, except that it lacks even basic optimizations like alpha-beta pruning, etc. and an incredibly fine-tuned evaluation function and a huge library of opening and closing moves.