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Offline Bill Spight
 Post subject: Castle game to finish
Post #1 Posted: Sun Feb 06, 2011 7:26 pm 
Honinbo

Posts: 10905
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Inspired by jts's shenanigans, here is an oldie. :)

Go Diagram
White to play {Black won by 1 pt. Black has 3 White prisoners.}
Click Here To Show Diagram Code
[go]$$W White to play {Black won by 1 pt. Black has 3 White prisoners.}
$$ ---------------------------------------
$$ | . . . . O X X . . . X X O O X X . . . |
$$ | . . . . . O X X . X X O . O O X X X X |
$$ | . . . O O O O X . X O O O O X X O X X |
$$ | . . O , . . . . . X X O . O X , O O X |
$$ | . O X X X O O X . X O O . O X X O O X |
$$ | . . O . . O X . . X O . . O . . O . O |
$$ | O O O X X O . X . X . X . O X X O . O |
$$ | O X X . X O . O O . . . X X . . O . . |
$$ | X X . . X O . . . X X O X . . X O O O |
$$ | . . . , X O . . O O O O X . . X X O X |
$$ | . . X X O O . . . . . O O X X X O O X |
$$ | . X O O . . O O X O . X O . O . . X X |
$$ | . X . O O X X O O O X X O . O X X . . |
$$ | . . X O X . X O X X X O X X X . X X . |
$$ | . X O O X . X O . . . O . . O X X O . |
$$ | . X X X O X X . X , X O . O O O O X . |
$$ | . O X O O X . X . . X X O . X O O X . |
$$ | . O O . O O X . . . . X X O X O . O X |
$$ | . . . . . O X . . . . . . O . . . O . |
$$ ---------------------------------------[/go]


How should the play go?

(More than one line of play is optimal for each player. :))

Enjoy! :)

_________________
The Adkins Principle:
At some point, doesn't thinking have to go on?
— Winona Adkins

Visualize whirled peas.

Everything with love. Stay safe.


Last edited by Bill Spight on Mon Feb 07, 2011 10:31 am, edited 3 times in total.
This post by Bill Spight was liked by: topazg
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Offline Horibe
 Post subject: Re: Castle game to finish
Post #2 Posted: Mon Feb 07, 2011 7:14 am 
Lives with ko

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Seems I recall the upper left as being famous...
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Offline Bill Spight
 Post subject: Re: Castle game to finish
Post #3 Posted: Sun Feb 13, 2011 9:07 am 
Honinbo

Posts: 10905
Liked others: 3651
Was liked: 3374
Well, nobody bit. :(

It is actually hard to go wrong, in the sense of failing to end up with Black winning by 1 point. However, the problem is trickier than I thought.

This is a Castle Game between Inoue Dosetsu (White) and Yasui Chitetsu. This was a time of esoteric knowledge, when each go house guarded its secrets. There are indications that House Inoue had a better grasp of the endgame that House Yasui. Certainly Dosetsu seems more sure-footed than Chitetsu. :)


_________________
The Adkins Principle:
At some point, doesn't thinking have to go on?
— Winona Adkins

Visualize whirled peas.

Everything with love. Stay safe.


Last edited by Bill Spight on Thu Aug 02, 2012 9:47 pm, edited 1 time in total.
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Offline gonut
 Post subject: Re: Castle game to finish
Post #4 Posted: Sun Feb 13, 2011 2:07 pm 
Dies in gote

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Nice problem. Thanks Bill!

I was always off by a point, because I missed the required White prophylactic in the lower right corner. Dagnabbit.
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