This is probably the best route. Either this, or get rid of the rule.
This rule cannot be shown to be correct in general, it may work for most
life and death problems, but can be wrong in semeai. You may get a nice
ELO increase, but you are still actively building a wrong rule into the
program.
Check out "the most difficult Go problem", problem 120 from Igo Hatsuyo
Ron, for example, where black keeps trying to push white to capture his
group which is getting bigger and bigger.. but surprisingly, white loses
if he does!
http://senseis.xmp.net/?MostDifficultProblemEver
http://www.harryfearnley.com/go/trmdpe/hats-120-2009.html
Christian
Michael Williams wrote:
You should set the limit to whatever yields the highest ELO in YOUR
program.
Harry Fearnley wrote:
Darren Cook wrote:
The largest nakade shape is the rabbity six. My wild guess would be to
outlaw self-atari for groups of 7+ stones.
The fun thing about computer go is how hard it is to make hard and fast
rules:
http://senseis.xmp.net/?BiggestKnownEyeSpaceForWhichThereIsANakade
Outlawing self-atari of 18+ stones is probably okay, but not quite so
useful :-).
http://www.dgob.de/dgoz/trmdpe/
Shows where not defending 20 stones in atari is best. This
position is easily modified to give a position where self
atari is best. Clearly this, as well as the 18-stone
nakade, is pathological and will _never_ occur in a real
game ... :-)
I would guess that there will be a fair number of self-atari
of up to 11 stones (especially on the edge, or in the corner,
and where there are cutting points) where the self-atari
would be the best move.
Harry
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http://www.goban.demon.co.uk Tel: +44 1865 248775
http://harryfearnley.com *** NEW site ***
Oxford Go Club: http://www.britgo.org/clubs/oxford_c.html
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