X can't fill J6 because that would be suicide. For the moment, H5 is an eye.
David > -----Original Message----- > From: computer-go-boun...@computer-go.org [mailto:computer-go- > boun...@computer-go.org] On Behalf Of Brian Sheppard > Sent: Wednesday, July 01, 2009 4:09 AM > To: computer-go@computer-go.org > Subject: [computer-go] Complicated seki with Ko > > >With X to move, Many Faces immediately gives about a 1% win rate, and > after > >a few seconds, resigns, showing 23742 playouts with 0.5% win rate. 10 ply > >principal variation, staring with A7. I don't have any special code to > >detect superko or give-2, get-1 in playouts, but the playouts don't > generate > >self- atari moves in a seki, so I think it never tries J6 for either side. > > How does MF recognize that it is a seki without analyzing what happens in > the ko? > The eye on H5 is false if X can fill J6, so it is premature to use the > "both > sides have an eye with only shared liberties" rule. > > > 1 2 3 4 5 6 7 8 9 > > A - O - O X - - X - > > B - X O - O X - O O > > C - O O - O - X O - > > D X X X O O O O O O > > E - O X X X O X O O > > F - - O X O X X X X > > G - - X X O O X X - > > H - O X O - O O X X > > J - O X O O - X - X > > X to play. > > _______________________________________________ > computer-go mailing list > computer-go@computer-go.org > http://www.computer-go.org/mailman/listinfo/computer-go/ _______________________________________________ computer-go mailing list computer-go@computer-go.org http://www.computer-go.org/mailman/listinfo/computer-go/
