RE: computer-go: Rules clarification

["Mousheng Xu" <moushengxu@xxxxxxxxxxx>]

Well, got confused.

My understanding of "ko" is that "no same board shape can be repeated". In 
that case, after e1-c1-d1-pass, it's # to play, and if # plays e1 again, it 
violates the rule of ko and thus loses the game.

-- Mousheng Xu


From: "Russ Williams" <russw@xxxxxxxxxxxxxxxxx>
> Reply-To: computer-go@xxxxxxxxxxxxxxxxx
> To: <computer-go@xxxxxxxxxxxxxxxxx>
> Subject: RE: computer-go: Rules clarification
> Date: Tue, 19 Mar 2002 08:59:04 -0600
>
> >     -------------
> >   2|# # # O O O O|2    # to play
> >   1|. # . # . O .|1
> >     -------------
> >
> > There are really two questions here:
> > 1:  How will the game continue, assuming skilful play?
> > 2:  What, then, will be the result?
> >
> > We are to assume Japanese rules.
> >
> > 1.
> > I can see two possible lines of skilful play:
> >     B pass
> >     W pass
> > and
> >     B C1
> >     W pass
> >     B pass
> >
> > 2.
> > After either line, the result is seki.  So no points are scored on the
> > board.  The prisoners (unspecified) and the komi (unspecified) are added
> > up, and the sum determines the result.
> >
> > Nick
>
> I assume the point of the original question was "wouldn't it be skillful
> play of black to keep playing "B-E1 W-D1 B-D2 W-pass B-E1 ...?" so that the
> game never terminates, rather than suffer a loss.  Simple ko doesn't 
> prevent
> black from doing that, right?  It does raise an issue with the notion of
> "the game terminates after both players pass" in that I have no incentive 
> to
> pass if I'm going to lose. :)  So what prevents this scenario other than 
> the
> assumption that black is a good sport?
>
> Russ

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