Re: [computer-go] Super Ko on KGS ignores player to move

[Erik van der Werf <erikvanderwerf@xxxxxxxxx>]

Hi John,

I'm not sure exactly what you try to show with this example, but with
a rule that simply says "suicide is illegal" you're back at one game
for all variants.

Best,
Erik



On 8/16/05, John Tromp <John.Tromp@xxxxxxxxxxxxxxxxx> wrote:
> Nick Wedd wrote:
> > There seems to be some confusion about the various superko rules.  I
> > know of three such rules:
> >
> > 1.  Positional Super Ko
> > A play may not recreate a previous board position from the game.
> >
> > 2.  Situational Super Ko
> > A play may not recreate a previous board position from the game, with
> > the same player to move next.
> >
> > 3.  Natural Situational Super Ko
> > A player may not play to recreate a board position, if s/he played to
> > create it previously.
> 
> These 3 types roughly correspond to the number of possible 1x1 games:
> 
> 
> PSK has 1 game: pass pass
> 
> SSK has 2 games: pass pass
>                   A1 pass pass
> 
> NSSK has 5 games: pass pass
>                    pass A1 pass pass
>                    pass A1 A1 pass pass
>                    A1 pass pass
>                    A1 A1 pass pass
> 
> As an exercise, try to work out the number of 1x2 games under the 3 rules:-)
> 
> regards,
> -John
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