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korean academy volume 3, #231
http://www.lifein19x19.com/viewtopic.php?f=15&t=9312
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Author:  nickxyzt [ Tue Nov 05, 2013 2:10 am ]
Post subject:  korean academy volume 3, #231

In the following position, I couldn't find a way for Black to live. Please advice.
Click Here To Show Diagram Code
[go]$$c Black to live.
$$ ---------------------------------------
$$ | . O . . . . . . . . . . . . . . . . . |
$$ | O X O . . . . . . . . . . . . . . . . |
$$ | . X O . O . . . . . . . . . . . . . . |
$$ | . . X O . . . . . , . . . . . , . . . |
$$ | . . X O . . . . . . . . . . . . . . . |
$$ | X . X O . . . . . . . . . . . . . . . |
$$ | . X O O . . . . . . . . . . . . . . . |
$$ | . O . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |[/go]

One possible sequence is:
Click Here To Show Diagram Code
[go]$$c Black to live.
$$ ---------------------------------------
$$ | 7 O . . . . . . . . . . . . . . . . . |
$$ | O X O . . . . . . . . . . . . . . . . |
$$ | 4 X O . O . . . . . . . . . . . . . . |
$$ | 2 3 X O . . . . . , . . . . . , . . . |
$$ | 5 1 X O . . . . . . . . . . . . . . . |
$$ | X . X O . . . . . . . . . . . . . . . |
$$ | 8 X O O . . . . . . . . . . . . . . . |
$$ | 6 O . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |[/go]

Still, Black dies... What am I missing here?

Author:  Shaddy [ Tue Nov 05, 2013 9:23 am ]
Post subject:  Re: korean academy volume 3, #231

I think the problem is wrong, but you can get ko with 5 at 6.

Author:  leichtloeslich [ Tue Nov 05, 2013 9:43 am ]
Post subject:  Re: korean academy volume 3, #231

Shaddy wrote:
you can get ko with 5 at 6.

4 at 6 is a clean kill.

Author:  Shaddy [ Tue Nov 05, 2013 9:57 am ]
Post subject:  Re: korean academy volume 3, #231

3 at 6, then

Author:  Bill Spight [ Tue Nov 05, 2013 10:59 am ]
Post subject:  Re: korean academy volume 3, #231

My guess is that something like this was the intended problem. :)

Click Here To Show Diagram Code
[go]$$c Black to live.
$$ ---------------------------------------
$$ | . O . . . . . . . . . . . . . . . . . |
$$ | O X O . . . . . . . . . . . . . . . . |
$$ | . X O . O . . . . . . . . . . . . . . |
$$ | . . X O . . . . . , . . . . . , . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | X . X O . . . . . . . . . . . . . . . |
$$ | . X O O . . . . . . . . . . . . . . . |
$$ | . O . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |[/go]

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