Re: [computer-go] Speed and ladder bracker

[Heikki Levanto <heikki@xxxxxx>]

On Sun, Aug 08, 2004 at 11:49:56PM +0200, chrilly wrote:
> [...] Many faces seems to recognize ladder brakers. [...] The question
> is closely related to speed, because this far ranging interactions
> require in my understanding some global look-ahead (or a very clever
> evaluation).

I am pretty sure Many Faces has a special ladder reading routine, which
it uses in local evaluation. That also explains why it recognizes a
ladder break, but will not necessarily see how to play one itself - the
ladder code is called from evaluating this one group, probably pretty
early, and will not be in a position to see if a ladder breaker would
also act as a viable threat to something else.

All this is based on pure speculation, I have never seen the code of
Many Faces. I know something similar holds for Gnu Go.

- Heikki


-- 
Heikki Levanto   "In Murphy We Turst"     heikki (at) lsd (dot) dk

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