On Nov 6, 2008, at 11:09 AM, Don Dailey <[EMAIL PROTECTED]> wrote:
On Thu, 2008-11-06 at 10:44 -0500, Jason House wrote:
I think simplistic handling of Japanese rules should play dame
points
that connect chains. This avoids some problems that can arise where
ownership probability drops after the opponent plays the dame, and a
point of territory must get filled.
I'm trying to think of a counter example where my rule will not work.
Of course this has to be understood within the context of the playing
strength of the bot itself, so we don't expect extremely sophisticated
handling of special cases.
Consider a miai to connect a chain with two liberties. It's easy to
get the ownership correct in all heavy playouts. If one of the two
miai points is dame, your rule would say not to play it. If the
opponent plays there, the chain ends up in atari...
In my example, both black and white have clearly live stones and there
is an empty point touching both of them. Assuming that the map is
correct of course and both groups are alive, then I suppose a
connecting move could cause a weaker group to live. So that suggests
another rule - in addition to the original condition of at least 1
white and black live group touching, there should be no connections
to
a group that is not alive.
A group that is "alive" passes some thresehold of certainty.
Otherwise, it is not-alive but not dead. The threshold might be
something like 90 - 95% or something but some experimentation would be
required to find a good value for this.
- Don
Even if not technically required, I can imagine bots acting like
beginners and get nervous over imagined vulnerabilites.
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