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Nice endgame problem
http://www.lifein19x19.com/viewtopic.php?f=15&t=8807		 Page 1 of 1
Author:  drmwc [ Sat Jul 27, 2013 1:10 pm ]
Post subject:  Nice endgame problem
Here's an endgame problem:

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


The rest of the board is settled. White to play - is there anything she can do?
Author:  HermanHiddema [ Sat Jul 27, 2013 1:34 pm ]
Post subject:  Re: Nice endgame problem
Slightly more elaborate version: http://senseis.xmp.net/?XuanxuanQijingProblem198
Author:  Splatted [ Sat Jul 27, 2013 1:49 pm ]
Post subject:  Re: Nice endgame problem
Edit: Nope, I don't know the answer. :D
Author:  moyoaji [ Sat Jul 27, 2013 1:52 pm ]
Post subject:  Re: Nice endgame problem
This solution didn't work. See my other one.

Here is my solution.



Attachments:
Solution.sgf [492 Bytes]
Downloaded 503 times
Author:  drmwc [ Sat Jul 27, 2013 1:54 pm ]
Post subject:  Re: Nice endgame problem
Close, Splatted amd moyoaji but...

Click Here To Show Diagram Code
[go]$$Wc1
$$ . . . . . . . . . . . . . . |
$$ . . . . . . . O O O O O . . |
$$ . . . . . . O O X X X O . . |
$$ . . . O O O O X X . X O O O |
$$ . . . O X X X 1 2 7 5 X X X |
$$ . . . O X . . 3 4 . 6 8 . X |
$$ ---------------[/go]


The double snap back does not emerge.


I hadn't realised this was a classic problem - my source was a relatively recent Korean book of endgame problems.
Author:  moyoaji [ Sat Jul 27, 2013 2:04 pm ]
Post subject:  Re: Nice endgame problem
But what if I change the order of moves to make it happen?



Attachments:
Solution.sgf [528 Bytes]
Downloaded 547 times
Author:  drmwc [ Sat Jul 27, 2013 2:11 pm ]
Post subject:  Re: Nice endgame problem
Well done - that works.

I like double snap backs.
Author:  Splatted [ Sat Jul 27, 2013 2:30 pm ]
Post subject:  Re: Nice endgame problem
I (eventually) got the same solution as moyoaji. Thanks for posting it was a fun problem. :D
Author:  logan [ Sat Jul 27, 2013 7:54 pm ]
Post subject:  Re: Nice endgame problem
HermanHiddema wrote:
Slightly more elaborate version: http://senseis.xmp.net/?XuanxuanQijingProblem198

drmwc wrote:
I hadn't realised this was a classic problem - my source was a relatively recent Korean book of endgame problems.

Yep, there are around a dozen variations on this double snapback theme in the Xuanxuan Qijing, and even more in the Guanzi Pu.

Thank-you for sharing drmwc.
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