Re: [Bug-gnubg] Predefined move filters

[Gary Wong]

On Mon, Dec 30, 2002 at 07:11:30PM -0200, Albert Silver wrote:
> I'll do some testing of this, but it's not always easy to see the
> difference. One detail: It's true that the 1-ply is the worst (IMHO) ply
> depth, however, in my experience, the 3-ply is definitely stronger than
> the 2-ply. This has been confirmed by numerous rollouts, as well as
> errors pointed out by Snowie.

I agree.  In fact, I think 1-ply comes out worst only when the judge
is an even-ply evaluation; head-to-head, 1-ply beats 0-ply by a tiny
margin.

The ply oscillation problem is particularly annoying.  It's
reminiscent of all those court cases where decisions get appealed from
court to court, being reversed at each step along the way, and the
final outcome is really a matter of which side was lucky enough to be
"in phase" when the ultimate court is reached, rather than whatever
merits one might find to consider.  (Of course, in the U.S.A., they
pick presidents that way.)

Cheers,
Gary.
-- 
   Gary Wong           address@hidden           http://www.cs.arizona.edu/~gary/