[computer-go] A thought about Bot-server communications

[Álvaro Begué]

On Dec 10, 2007 11:56 AM, Nick Wedd <nick at maproom.co.uk> wrote:

> In message
> <7b0793ea0712100823g54261bfch37f6bb7a4775d609 at mail.gmail.com>, Álvaro
> Begué <alvaro.begue at gmail.com> writes
>
> >It is not my intention to sound confrontational. I really don't know
> >how other rule sets deal with tricky situations.
>
> For long-cycle repetitions:
> Japanese:      A repetition lead to "no result".  The game is replayed.
> Chinese:       A player may not repeat a previous board position and
>                when he does the game counts as half a win to each
>                player.  (KGS interprets this as Positional Superko.)
> Ing/SST:       Some repetitions are forbidden by the SST ko rule, which
>                very few people understand.
> AGA:           Positional Superko
> Tromp-Taylor:  Positional Superko
> NZ:            Situational Superko
> France:        Natural Situational Superko
>
> Suicide is permitted by Ing/SST, Tromp-Taylor and NZ rules, and
> forbidden by the others listed above.


Thanks for the brief summary of all these rulesets!

It looks like even under non-superko rules, something special happens if a
position is repeated, which means that a program should know the entire
history of the game, or it may accidentally repeat a previous position, even
if it is winning the game by a large margin.


Álvaro.
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