RE: [computer-go] Computer Go tournament at EGF

["David Fotland" <fotland@xxxxxxxxxxxxxxx>]

Many Face's static evaluation says the game is not over since there are
unsettled stones.
It moves at h1, and finds the move in 1.38 seconds.  It spent 198 nodes of
life/death
reading on the O group with # to move to conclude that h1, e2, and d1 all
kill it, although it ran out
of time before it could prove any of those moves.  The life/death search
gives 80% confidence
that e2 kills, and 60% for the other two moves.  It picks h1 since it is
more clearly saves
the # group.

During life and death reading, it also read the O group with O to move first
(148 nodes), and 
discovered that the O group could live at E2 (80% confidence), and all other
moves fail (h1 leads
to a ko).

Are you impressed?  :)

David

> -----Original Message-----
> From: computer-go-bounces@xxxxxxxxxxxxxxxxx 
> [mailto:computer-go-bounces@xxxxxxxxxxxxxxxxx] On Behalf Of 
> Erik van der Werf
> Sent: Tuesday, February 15, 2005 7:28 AM
> To: computer-go
> Subject: Re: [computer-go] Computer Go tournament at EGF
> 
> 
> Erik van der Werf wrote:
> 
> > Erik van der Werf wrote:
> >
> >> Nick Wedd wrote:
> >>
> >>>  . . . . . . . . .    Complete 9x9 board
> >>>  . . . . . . . . .    # to play
> >>>  . . . . . . . . .    no komi
> >>>  O O O O O O . . .    (position adapted from Davies Life 
> & Death p. 59)
> >>>  # # # # # O O O O
> >>>  . # . O # # # # #
> >>>  # # . O . . # . #
> >>>  # O O . . O O # O
> >>>  . . . . . . . . .
> >>>
> >>> Is this position "finished"?
> >>>
> >>> If you can work out the answer in less than 15 minutes, you are a
> >>> better player than I am.  If your program can work out 
> the answer at 
> >>> all, I will be impressed.  I set Thomas Wolf's GoTools 
> working on it 
> >>> - its estimate of the time it would need rose to over two 
> hours, and 
> >>> then it gave up trying.
> >>
> >>
> >>
> >>
> >> Magog solved it in less than 6 seconds.
> >
> >
> > Ooops, Magog played by chinese rules, that's probably not 
> interesting
> > for you. Sorry,
> 
> 
> Now tested it with Migos. To win under Japanese rules Black 
> has to pass, 
> so I let White move first. In about 200 seconds it proofs that White 
> wins big time (by starting a ko at h1). So black can't afford to pass 
> and should simply play h1 to obtain jigo under Japanese rules.
> 
> Erik
> 
> 
> _______________________________________________
> computer-go mailing list
> computer-go@xxxxxxxxxxxxxxxxx
> http://www.computer-go.org/mailman/listinfo/computer-go/
> 


_______________________________________________
computer-go mailing list
computer-go@xxxxxxxxxxxxxxxxx
http://www.computer-go.org/mailman/listinfo/computer-go/