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 Post subject: Curious joseki
Post #1 Posted: Tue Oct 12, 2021 10:14 am 
Lives with ko

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I have been going through Go Siegen's book Black Opening and it struck me that the old master really played something different in the last game of his book. I checked in the databases and it seems real as in same move order. The game is different in the book at move 47 which is not so unusual because Go seems to have tried to correct the games when he felt like it. The game record also challenges the notion that pros resign simply when far behind because Go lost by 22 points, in this case a large ko took the game right into the last few moves and they seem to have just finished the game without that "why doesn't he resign???" fuss.


Click Here To Show Diagram Code
[go]$$Bcm7 Note the move order in the upper left.
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . 7 . . . . . . X . . |
$$ | . . 4 , . . . . . , . . . . . , . . . |
$$ | . . 2 1 . . . . . . . . . . . . . . . |
$$ | . . 3 6 8 . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 9 , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 0 . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . X . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . O . . . . . 5 . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

Click Here To Show Diagram Code
[go]$$Bcm17
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . 2 . X . 6 . 9 . . X . . |
$$ | . . O , . . . . . , . . . . 0 , . . . |
$$ | . . O X . . . 8 . 7 . . . . . . . . . |
$$ | . . X O O . . . . . . . . . . . . . . |
$$ | . . 1 . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . 3 . . . . . . . . . . . . . . |
$$ | . . X , . . . . . , . . . . . , 4 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . 5 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . X . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . O . . . . . X . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


I have just included all the moves that fit into two diagrams but you can find the whole game.


==== Edit. Changed link so that the browser doesn't warn about unsecure connection.


Last edited by kvasir on Sat Oct 16, 2021 12:54 am, edited 1 time in total.
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 Post subject: Re: Curious joseki
Post #2 Posted: Wed Oct 13, 2021 2:08 am 
Gosei
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What's curious about it? I don't see it.

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 Post subject: Re: Curious joseki
Post #3 Posted: Wed Oct 13, 2021 2:18 am 
Lives in sente
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It looks strange that :w14: would be played before :b17:. I would guess that the recording was mixed up a bit.

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A good system naturally covers all corner cases without further effort.

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 Post subject: Re: Curious joseki
Post #4 Posted: Wed Oct 13, 2021 2:29 am 
Lives with ko

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Normally one reaches the shape in the upper left corner like this.

Click Here To Show Diagram Code
[go]$$Bcm13
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . 6 . 5 . . . . . . X . . |
$$ | . . O , . . . . . , . . . . . , . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . X O 2 . . . . . . . . . . . . . . |
$$ | . . 1 . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . 7 . . . . . . . . . . . . . . |
$$ | . . 3 , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 4 . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . X . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . O . . . . . X . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


This gives white chance to play :w16: on the top.

Click Here To Show Diagram Code
[go]$$Wcm16
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . 1 . . . . . . X . . |
$$ | . . O , . . . . . , . . . . . , . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . X O O . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . X . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . O . . . . . X . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


:w14: is also more normally played like this.

Click Here To Show Diagram Code
[go]$$Bcm13
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . 1 . . . . . . X . . |
$$ | . . O , . . . . . , . . . . . , . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . X O . . . . . . . . . . . . . . . |
$$ | . . . 2 . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . X . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . O . . . . . X . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

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 Post subject: Re: Curious joseki
Post #5 Posted: Wed Oct 13, 2021 2:32 am 
Lives with ko

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Harleqin wrote:
It looks strange that :w14: would be played before :b17:. I would guess that the recording was mixed up a bit.


That is what I thought when I saw it in the book, but when I looked up the game it was the same. The computer also seems to approve.

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