Re: [computer-go] Test position set for MC programs
Yamato wrote: > I attached the fixed version to this email. Thanks for your help. Another correction. In 119 black has a serious weakness on the right. Is there any way for black to win after B B1, W C2, B C1, W H3? /Gunnar ___ computer-go mailing list computer-go@computer-go.org http://www.computer-go.org/mailman/listinfo/computer-go/
RE: [computer-go] Test position set for MC programs
Another alternate move. On problem 108 it seems that a2 works, although it looks inferior. A2, a3, g1, h1, a4, and if white cuts at b4, black captures and white has no ko threats. If white doesnt answer at h1, black can live in the corner and white cant live on the left. Gunnar, does this look correct? David > -Original Message- > From: [EMAIL PROTECTED] [mailto:computer-go- > [EMAIL PROTECTED] On Behalf Of Gunnar Farnebäck > Sent: Tuesday, April 22, 2008 12:20 PM > To: computer-go > Subject: Re: [computer-go] Test position set for MC programs > > Yamato wrote: > > Gunnar Farnebäck wrote: > 143: I don't see how A3 could win the semeai. A2 and C4 look more > effective. > >>> Typo, it was A2. C4 cannot work. > >> How does white defend against C4? I'm looking at B C4, W B4, B B5, > >> W B6, B A2 without finding a way out for white. Did I miss > something? > > > > Oh, I see... > > I quoted this problem from a book, but it did not mention C4. > > If C4 works, it is not a good test, then I modify it a little. > > > > I attached the fixed version to this email. Thanks for your help. > > One more correction. The fixed version added B1 as a correct move in > 113, but that point is occupied. > > GNU Go 3.7.12 results for the fixed version: > > GNU Go 3.7.12 level 0 : 24/50 > GNU Go 3.7.12 level 10 : 34/50 > GNU Go 3.7.12 level 15 : 37/50 > GNU Go 3.7.12 mc, 1k : 30/50 > GNU Go 3.7.12 mc, 10k : 31/50 > GNU Go 3.7.12 mc, 100k : 38/50 > GNU Go 3.7.12 mc, light, 1k: 33/50 > GNU Go 3.7.12 mc, light, 10k : 30/50 > GNU Go 3.7.12 mc, light, 100k : 25/50 > GNU Go 3.7.12 mc, mogo, 1k : 34/50 > GNU Go 3.7.12 mc, mogo, 10k: 33/50 > GNU Go 3.7.12 mc, mogo, 100k : 35/50 > > /Gunnar > ___ > 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/
Re: [computer-go] Test position set for MC programs
Black doesn't need the lower-right corner as territory after killing the lower left. After B B1 W C2 B C1 W H3 B G3, w gains about 7 points in the lower right but has already lost like 31 in the lower left, and black wins by 15. Either I'm missing something obvious, or you overlooked that the lower left is not a seki, or something like that. On Sat, Apr 26, 2008 at 2:58 PM, Gunnar Farnebäck <[EMAIL PROTECTED]> wrote: > Yamato wrote: > > I attached the fixed version to this email. Thanks for your help. > > Another correction. In 119 black has a serious weakness on the right. > Is there any way for black to win after B B1, W C2, B C1, W H3? > > > > /Gunnar > ___ > 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/
Re: [computer-go] Test position set for MC programs
Huh? A seki doesn't get much more basic than this. 4 X X X X X . X . X 4 3 . O O O O X X O . 3 2 O O O . O O X . . 2 1 . X X X O X X . . 1 A B C D E F G H J /Gunnar Eric Boesch wrote: > Black doesn't need the lower-right corner as territory after killing > the lower left. After B B1 W C2 B C1 W H3 B G3, w gains about 7 > points in the lower right but has already lost like 31 in the lower > left, and black wins by 15. Either I'm missing something obvious, or > you overlooked that the lower left is not a seki, or something like > that. > > On Sat, Apr 26, 2008 at 2:58 PM, Gunnar Farnebäck <[EMAIL PROTECTED]> wrote: >> Yamato wrote: >> > I attached the fixed version to this email. Thanks for your help. >> >> Another correction. In 119 black has a serious weakness on the right. >> Is there any way for black to win after B B1, W C2, B C1, W H3? ___ computer-go mailing list computer-go@computer-go.org http://www.computer-go.org/mailman/listinfo/computer-go/
Re: [computer-go] Test position set for MC programs
"Huh" is right. You wrote C2 C1 and so did I, but I somehow did so while looking at C1 C2. I'm not sure how I managed that myself. On Sat, Apr 26, 2008 at 5:24 PM, Gunnar Farnebäck <[EMAIL PROTECTED]> wrote: > Huh? A seki doesn't get much more basic than this. > > 4 X X X X X . X . X 4 > 3 . O O O O X X O . 3 > 2 O O O . O O X . . 2 > 1 . X X X O X X . . 1 >A B C D E F G H J > > /Gunnar > > > Eric Boesch wrote: > > Black doesn't need the lower-right corner as territory after killing > > the lower left. After B B1 W C2 B C1 W H3 B G3, w gains about 7 > > points in the lower right but has already lost like 31 in the lower > > left, and black wins by 15. Either I'm missing something obvious, or > > you overlooked that the lower left is not a seki, or something like > > that. > > > > On Sat, Apr 26, 2008 at 2:58 PM, Gunnar Farnebäck <[EMAIL PROTECTED]> > wrote: > >> Yamato wrote: > >> > I attached the fixed version to this email. Thanks for your help. > >> > >> Another correction. In 119 black has a serious weakness on the right. > >> Is there any way for black to win after B B1, W C2, B C1, W H3? > > ___ > 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/
Re: [computer-go] Test position set for MC programs
David Fotland wrote: > Another alternate move. On problem 108 it seems that a2 works, although it > looks inferior. > A2, a3, g1, h1, a4, and if white cuts at b4, black captures and white has no > ko threats. > If white doesn’t answer at h1, black can live in the corner and white can’t > live on the left. > > Gunnar, does this look correct? Yes, and I get the same score as with A3, so it's not even inferior, only more complicated. With the given komi it's also possible to play A2, A3, A4 directly without the G1, H1 exchange but this is inferior in points. /Gunnar ___ computer-go mailing list computer-go@computer-go.org http://www.computer-go.org/mailman/listinfo/computer-go/
