[Computer-go] Many Faces and Japanese rules

Robert Jasiek jasiek at snafu.de
Tue Apr 27 11:07:41 PDT 2010


On 2010-04-27 13:37, Aja wrote:
 > My approach has already considered plus-minus 1
> and differences of passes, but only globally rather than locally. I
> wonder do you think it is OK?

For which purpose...?

If all local boundaries are fixed and life and death is settled locally 
in each region and ko does not play a role, then the local behaviour of 
each region considered together for all regions should equal the global 
behaviour. Otherwise the same cannot be said. So why would you want to 
consider things "only globally"?


. # O . O # . # O .
. # O O O # # # O .
. # O . O # . # O .


. O . O # . # .
# O O O # # # O
# O . O # . # O


. # O . O # . # O .
O # O O O # # # O #
O # O . O # . # O #


You might create problems for yourself... Globally terminal (for human 
players) under perfect play does not(!) imply locally terminal in general.

If your aim is to approach rather than to guarantee perfect play, you 
might ignore the global / local difference nevertheless. Maybe such a 
strategic cheating by simplification saves computational time. You 
should just be aware that your program might sometimes make strategic 
mistakes as a consequence.

-- 
robert jasiek



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