Just as a caveat, keep in mind that alpha-beta is only guaranteed to not affect the result if the rest of your search is completely deterministic. While that's a good first order approximation to the truth, it's rarely actually true in anything as complex as a Go program.
For example, if one possible consequence of evaluating a node is developing a "fact" that a certain group is safe, and alpha beta prunes out the node, then the fact is also pruned and any deductions you might make based on it will change. Another obvious possibility is that since your whole search is running so much faster, time control will permit a lot more study. The important point is that alpha-beta doesn't deliberately change the local result. _______________________________________________ computer-go mailing list computer-go@computer-go.org http://www.computer-go.org/mailman/listinfo/computer-go/
