I was playing black in a face-to-face match when white played this move:
The resulting sequence killed my corner. Is there any way for black to salvage the position here and make some kind of life?
Life and Death from Recent Game
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NousAutres
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Life and Death from Recent Game
Last edited by NousAutres on Mon Apr 25, 2011 5:38 am, edited 1 time in total.
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tj86430
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Re: Life and Death from Recent Game
There is something wrong with your diagram (at least there is an extra empty line, and I think by Q you mean W. Like this:
e: and to answer your question: black looks pretty dead to me.
e: and to answer your question: black looks pretty dead to me.
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NousAutres
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Magicwand
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Re: Life and Death from Recent Game
1 above seems like only move black can play to stay alive.
not reading too deeply...it is very hard to kill black without ko.
i think you need to give little more info on top and left side.
"The more we think we know about
The greater the unknown"
Words by neil peart, music by geddy lee and alex lifeson
The greater the unknown"
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aurik
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Re: Life and Death from Recent Game
Looks like ko after B1 given by above, if Black doesn't have a chance to escape along the edge.
Something like this?
edit: that variation actually might just be dead for W. Anyway, there are lots of variations to explore, I wouldn't say this is clearly dead for B. Escape up the right side is a powerful threat.
Something like this?
edit: that variation actually might just be dead for W. Anyway, there are lots of variations to explore, I wouldn't say this is clearly dead for B. Escape up the right side is a powerful threat.
Keep in mind, I am frequently wrong.
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Abydos1
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Re: Life and Death from Recent Game
aurik wrote:Looks like ko after B1 given by above, if Black doesn't have a chance to escape along the edge.
Something like this?
Black can play
@ W10 and is clearly alive.This is the best I could come up with; looks like white should get at least ko.
Last edited by Abydos1 on Mon Apr 25, 2011 2:20 pm, edited 1 time in total.
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aurik
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Re: Life and Death from Recent Game
Yes, much better.
B5 allows W to play 6 in sente, setting up the ko. So naturally, I questioned that move, but the alternative B5 @ 7 also seems to lead to ko.
B@a -> W@b throw-in ko
B@b -> W@a, then if B@c, W@d throw-in ko
B@b -> w@a, if B@d, W@f, B@g, W@c. The corner is bent-4 but not dead as the status of the surrounding B group is questionable, so it will probably be played out as a ko, my guess is that should be played immediately at this point. Once again, W must find the first threat.
See anything I've missed?
Edit: of these options, I like option 2 the best. Option 3 gives W the forcing move at f. Option 1 and 2 look quite close, but option 2 is perhaps slightly better late in the game, as there is the possibility of an additional ko threat (at the 1-1 point) if all of black's outside liberties are filled.
B5 allows W to play 6 in sente, setting up the ko. So naturally, I questioned that move, but the alternative B5 @ 7 also seems to lead to ko.
B@a -> W@b throw-in ko
B@b -> W@a, then if B@c, W@d throw-in ko
B@b -> w@a, if B@d, W@f, B@g, W@c. The corner is bent-4 but not dead as the status of the surrounding B group is questionable, so it will probably be played out as a ko, my guess is that should be played immediately at this point. Once again, W must find the first threat.
See anything I've missed?
Edit: of these options, I like option 2 the best. Option 3 gives W the forcing move at f. Option 1 and 2 look quite close, but option 2 is perhaps slightly better late in the game, as there is the possibility of an additional ko threat (at the 1-1 point) if all of black's outside liberties are filled.
Keep in mind, I am frequently wrong.
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Magicwand
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Re: Life and Death from Recent Game
"The more we think we know about
The greater the unknown"
Words by neil peart, music by geddy lee and alex lifeson
The greater the unknown"
Words by neil peart, music by geddy lee and alex lifeson
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Abydos1
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neat, 
is a nice tesuji; I can't see anything else then.