I struggled a lot with pass, because it somehow have to be legal when
it is necessary to pass. But in order to handle seki (that is play
strong in general when a seki is present or a possible outcome) I
found that the only way to do it is to let the playouts handle it
correctly. Since Valkyria has extremely heavy playouts it is not
costly. Basically one only has to check suicidal moves if they could
be part of a seki and then forbid such moves. But there are a lot of
special cases and one has to be careful to only forbid such moves that
really could be part of a seki.
There is no single algorithm but just a lot of special cases for
different situations.
-Magnus
Quoting Lars Schäfers <[email protected]>:
So far, gomorra doesn't support the pass move in the search. So it
is its only possibility to get through a seki position at the end of
the game. Therefore gomorra passes 3 times before it resigns.
Of course, its not optimal :)
I wonder if there are others who haven't implemented the pass move
but found a nice way of handling seki situations during the search?
- Lars
-----Ursprüngliche Nachricht-----
Von: "Magnus Persson" <[email protected]>
Gesendet: 12.01.10 11:49:28
An: [email protected]
Betreff: Re: [computer-go] Congratulations to Fuego!
If the winning chance are lower than a lower threshold it should
resign not pass. The only alternative to resigning in a lost position
is to play on unless there are no legal moves.
Best Magnus
Quoting Lars Schäfers <[email protected]>:
> Hi Nick,
>
> just two little comments to the report:
> - In your comment to round 12 you stated that gomorra doesn't support
> cleanup. It does. But if the winning chance is lower than a certain
> threshold it also passes in the cleanup phase when there are still dead
> stones.
> - Since the last tournament there is a little typo in the "Processor
> numbers, power, etc" section, where gomorra got an additional m :)
>
> Thank you all for the tournament and thank you Nick for the report too!!
>
> Lars
> ___________________________________________________________
> Preisknaller: WEB.DE DSL Flatrate für nur 16,99 Euro/mtl.!
> http://produkte.web.de/go/02/
>
> _______________________________________________
> computer-go mailing list
> [email protected]
> http://www.computer-go.org/mailman/listinfo/computer-go/
>
--
Magnus Persson
Berlin, Germany
_______________________________________________
computer-go mailing list
[email protected]
http://www.computer-go.org/mailman/listinfo/computer-go/
___________________________________________________________
Preisknaller: WEB.DE DSL Flatrate für nur 16,99 Euro/mtl.!
http://produkte.web.de/go/02/
_______________________________________________
computer-go mailing list
[email protected]
http://www.computer-go.org/mailman/listinfo/computer-go/
--
Magnus Persson
Berlin, Germany
_______________________________________________
computer-go mailing list
[email protected]
http://www.computer-go.org/mailman/listinfo/computer-go/
