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 Post subject: Is this a tesuji? Does it have a name?
Post #1 Posted: Tue Feb 21, 2017 5:55 am 
Lives with ko

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I just played a sequence analog to the following in a 9x9 game:

Click Here To Show Diagram Code
[go]$$ Black splits White
$$ . . O . X . O . .
$$ . . O . X . O . .
$$ . . O . X . O . .
$$ . . O X X X O . .
$$ . . O 2 5 4 O . .
$$ . . . 1 O 3 . . .
$$ . . . 7 6 . . . .
$$ ----------------[/go]

Is this a tesuji? Does it have a name?

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 Post subject: Re: Is this a tesuji? Does it have a name?
Post #2 Posted: Tue Feb 21, 2017 8:04 am 
Oza

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It is certainly a well-known tesuji but I never seen that it has a name.

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 Post subject: Re: Is this a tesuji? Does it have a name?
Post #3 Posted: Tue Feb 21, 2017 8:27 am 
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It is known as the "two stone edge squeeze" or "stone tower" tesuji. See this Sensei's Library page for more information: http://senseis.xmp.net/?TwoStoneEdgeSqueeze

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 Post subject: Re: Is this a tesuji? Does it have a name?
Post #4 Posted: Tue Feb 21, 2017 8:32 am 
Tengen

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gowan wrote:
It is known as the "two stone edge squeeze" or "stone tower" tesuji. See this Sensei's Library page for more information: http://senseis.xmp.net/?TwoStoneEdgeSqueeze

Although that was also my thought at a cursory glance, it's not what is shown. It is simply what I would describe as cutting a double knight's move on the 3rd to 2nd line. Here are the key stones from which I expect a ~15 kyu or stronger to realise it is cut.

Click Here To Show Diagram Code
[go]$$ Black splits White
$$ . . . . . . . . .
$$ . . . . . . . . .
$$ . . . . . . . . .
$$ . . . X X X . . .
$$ . . O . . . O . .
$$ . . . 1 O . . . .
$$ . . . . . . . . .
$$ ----------------[/go]

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 Post subject: Re: Is this a tesuji? Does it have a name?
Post #5 Posted: Tue Feb 21, 2017 10:47 am 
Judan

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luigi wrote:
I just played a sequence analog to the following in a 9x9 game:

Click Here To Show Diagram Code
[go]$$ Black splits White
$$ . . O . X . O . .
$$ . . O . X . O . .
$$ . . O . X . O . .
$$ . . O X X X O . .
$$ . . O 2 5 4 O . .
$$ . . . 1 O 3 . . .
$$ . . . 7 6 . . . .
$$ ----------------[/go]

Is this a tesuji? Does it have a name?


:b1: is a jump attachment. :b3: is a clamp. :b5: - :b7: capture White in a ladder.

The whole operation may be called a scissors. That term is not in common use in English, but I saw it (in Japanese, OC) in an old copy of the problem classic, Gokyo Shumyo. (See http://senseis.xmp.net/?GokyoShumyo )

Congratulations on seeing it! :D :clap: :clap: :clap:

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This post by Bill Spight was liked by 2 people: Akura, luigi
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 Post subject: Re: Is this a tesuji? Does it have a name?
Post #6 Posted: Tue Feb 21, 2017 1:42 pm 
Lives with ko

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Bill Spight wrote:
luigi wrote:
I just played a sequence analog to the following in a 9x9 game:

Click Here To Show Diagram Code
[go]$$ Black splits White
$$ . . O . X . O . .
$$ . . O . X . O . .
$$ . . O . X . O . .
$$ . . O X X X O . .
$$ . . O 2 5 4 O . .
$$ . . . 1 O 3 . . .
$$ . . . 7 6 . . . .
$$ ----------------[/go]

Is this a tesuji? Does it have a name?


:b1: is a jump attachment. :b3: is a clamp. :b5: - :b7: capture White in a ladder.

The whole operation may be called a scissors. That term is not in common use in English, but I saw it (in Japanese, OC) in an old copy of the problem classic, Gokyo Shumyo. (See http://senseis.xmp.net/?GokyoShumyo )

Congratulations on seeing it! :D :clap: :clap: :clap:

Thanks. :)

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