Many Faces also plays c9 right away, with about 66% win for O, expecting A8 then A6.
> -----Original Message----- > From: [email protected] [mailto:computer-go- > [email protected]] On Behalf Of Magnus Persson > Sent: Monday, June 22, 2009 7:05 AM > To: [email protected] > Subject: Re: [computer-go] Position Rich in Lessons > > Quoting Brian Sheppard <[email protected]>: > > > > > Further analysis convinced me that O is actually winning this game. My > > current > > engine likes A8 for O until iteration 7000, and then F9 for O, and > switches > > to the winning move only on iteration 143,000. But it doesn't really > "see" > > the win, because the evaluation remains around 50.3% no matter how long > > Pebbles > > searches. > > What komi did you use? It is nice to have the sgf in addition to the > position. > > Anyway I entered the position manually with komi 7.5, and Valkyria > plays C9 right away winning the semeai in the upper right corner and > after that white wins 0.5 even if black gets everything else. > > Could it be that Pebbles have trouble seeing that the semeai is won > after white C9. Valkyria expects black A8 after C9 which delays the > capture of the white stones. Sometimes Valkyria has (or used to) > problems evaluating such semeais. > > -Magnus > > > -- > Magnus Persson > Berlin, Germany > _______________________________________________ > computer-go mailing list > [email protected] > http://www.computer-go.org/mailman/listinfo/computer-go/ _______________________________________________ computer-go mailing list [email protected] http://www.computer-go.org/mailman/listinfo/computer-go/
