Many Faces has the same problem. Chinese rules, it thinks O wins about 70%.
> -----Original Message----- > From: [email protected] [mailto:computer-go- > [email protected]] On Behalf Of Brian Sheppard > Sent: Friday, July 10, 2009 7:05 PM > To: [email protected] > Subject: [computer-go] Another odd seki > > There is a seki in the lower left of the position below: > > 1 2 3 4 5 6 7 8 9 > A - O X X - X - - - > B X O X X X X X - X > C - O O X X - X X - > D O O O O X X X X X > E X X O - O X - X O > F - X X O O O X X O > G O X X X O X X O - > H O O X X O X O - O > J - X - X O O O O - > > It is obvious that X cannot play F1. O cannot play F1 because that would > sacrifice a "straight four". > > Pebbles has followed Magnus's advice and added a rule that prevents the > "two-for-one" trade that would occur when X plays J1, so that is also not a > problem. And for O, playing J1 is ruled out because X has another eye on > J3. > > What isn't obvious is that X cannot play J3. If X plays J3 then O follows > with J1 atari, and X loses because of the nakade shape of O's stones. > > The bottom line is that Pebbles rates this position as hugely favorable for > O, because X stumbles into J3 in the playouts. > > How does your program handle this situation? > > _______________________________________________ > 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/
