Re: [computer-go] Pattern matching - example play

[Chris Fant <chrisfant@xxxxxxxxx>]

> > > 9 ply full width on 9x9?  Certainly not near the beginning of the game.
> >
> >It depends on the time settings. For tournament play it was probably a
> >bit less in the opening and a bit more towards the end.
>
> With nullmove R=3 and some selectivity and good hashtables you should get
> far deeper depending upon the total nodes you see.

Obviously when you start pruning you can get deeper.  Did I just
imagine the phrase "full width"?  No, I think it was actually in the
original email.  Sqrt(81 perm 9) = 308E6 leaf nodes to evaluate for
the first move of the game.  Symetry and a transposition table both
reduce it by some uncalc-able (by me) amount.  But my point is that
"full width" does not mean "add your favorite move selection heuristic
for tree pruning".  I am by no means an expert on search, I just
believe in preserving the meaning of a given terminology.
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