Punishing joseki mistake (problem)

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fwiffo
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Punishing joseki mistake (problem)

Post by fwiffo »

I had an opponent deviate from joseki, allowing a fairly severe punishment. I thought it might be an interesting problem for maybe 6k players.

Click Here To Show Diagram Code
[go]$$Bm1
$$ ------------------
$$ | . . . . . . . . .
$$ | . . . . . . . . .
$$ | . . 3 4 6 . 2 . .
$$ | . . O 5 1 . . . .
$$ | . . . . . . . . .
$$ | . . . . . . . . .
$$ | . . . . . . . . .[/go]

Click Here To Show Diagram Code
[go]$$Bm7
$$ ------------------
$$ | . . . . . . . . .
$$ | . . 6 a . 2 . . .
$$ | . . X O O 1 O . .
$$ | . 4 O X X 5 . . .
$$ | . . 3 . . . . . .
$$ | . . . . . . . . .
$$ | . . . . . . . . .[/go]

:w12: is not joseki - it should be at a. Black to punish the error!
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Re: Punishing joseki mistake (problem)

Post by Chew Terr »

Click Here To Show Diagram Code
[go]$$Bm7 b seems miai
$$ ------------------
$$ | . . . . . . . . .
$$ | . . 6 . b 2 B . .
$$ | . . X O O 1 O b .
$$ | . 4 O X X 5 . . .
$$ | . . 3 . . . . . .
$$ | . . . . . . . . .
$$ | . . . . . . . . .[/go]

Perhaps this?
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fwiffo
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Re: Punishing joseki mistake (problem)

Post by fwiffo »

Black can get more.
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Re: Punishing joseki mistake (problem)

Post by Magicwand »

fwiffo wrote:Black can get more.


i dont see any more. i am really curious how.
Click Here To Show Diagram Code
[go]$$Bm7 are you talking about this?
$$ ------------------
$$ | . . . . . . . . .
$$ | . . 6 . 8 2 7 . .
$$ | . 0 X O O 1 O . .
$$ | . 4 O X X 5 . . .
$$ | . 9 3 . . . . . .
$$ | . . . . . . . . .
$$ | . . . . . . . . .[/go]
"The more we think we know about
The greater the unknown"

Words by neil peart, music by geddy lee and alex lifeson
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Re: Punishing joseki mistake (problem)

Post by fwiffo »

This is what I had in mind. Maybe I'm wrong?
Click Here To Show Diagram Code
[go]$$Bm13
$$ ------------------
$$ | . . . . 6 . . . .
$$ | . . O 2 1 O 5 . .
$$ | . 4 X O O X O 7 .
$$ | . O O X X X . . .
$$ | . 3 X . . . . . .
$$ | . . . . . . . . .
$$ | . . . . . . . . .[/go]
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Re: Punishing joseki mistake (problem)

Post by CarlJung »

fwiffo wrote:This is what I had in mind. Maybe I'm wrong?
Click Here To Show Diagram Code
[go]$$Bm13
$$ ------------------
$$ | . . . . 6 . . . .
$$ | . . O 2 1 O 5 . .
$$ | . 4 X O O X O 7 .
$$ | . O O X X X . . .
$$ | . 3 X . . . . . .
$$ | . . . . . . . . .
$$ | . . . . . . . . .[/go]


Thats what I would have played.
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Re: Punishing joseki mistake (problem)

Post by amnal »

fwiffo wrote:This is what I had in mind. Maybe I'm wrong?
Click Here To Show Diagram Code
[go]$$Bm13
$$ ------------------
$$ | . . . . 6 . . . .
$$ | . . O 2 1 O 5 . .
$$ | . 4 X O O X O 7 .
$$ | . O O X X X . . .
$$ | . 3 X . . . . . .
$$ | . . . . . . . . .
$$ | . . . . . . . . .[/go]



Why not play 13 at 17? This is the normal way to play if you can, as white cannot answer differently so he ends up with worse shape.
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Re: Punishing joseki mistake (problem)

Post by fwiffo »

I guess that is a little better. But the point is that white gets sealed in on both sides, which isn't possible in the joseki line.
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Re: Punishing joseki mistake (problem)

Post by topazg »

amnal wrote:
fwiffo wrote:This is what I had in mind. Maybe I'm wrong?
Click Here To Show Diagram Code
[go]$$Bm13
$$ ------------------
$$ | . . . . 6 . . . .
$$ | . . O 2 1 O 5 . .
$$ | . 4 X O O X O 7 .
$$ | . O O X X X . . .
$$ | . 3 X . . . . . .
$$ | . . . . . . . . .
$$ | . . . . . . . . .[/go]



Why not play 13 at 17? This is the normal way to play if you can, as white cannot answer differently so he ends up with worse shape.


Doesn't White end up with better shape this way? That looks like a failed A-B-C principle to me :)
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Re: Punishing joseki mistake (problem)

Post by amnal »

topazg wrote:
Doesn't White end up with better shape this way? That looks like a failed A-B-C principle to me :)


It is not obvious to me that this is the case.
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Re: Punishing joseki mistake (problem)

Post by Magicwand »

they are both similar but bottom is the better answer by....fraction of a point.

Click Here To Show Diagram Code
[go]$$Bm13
$$ ------------------
$$ | . . . . O . . . .
$$ | . . O O . O X . .
$$ | . O . O O X O X .
$$ | . O O X X X . . .
$$ | . X X . . . . . .
$$ | . . . . . . . . .
$$ | . . . . . . . . .[/go]



Click Here To Show Diagram Code
[go]$$Bm13
$$ ------------------
$$ | . . . . . . . . .
$$ | . . O . O O X . .
$$ | . O . O O X O X .
$$ | . O O X X X . . .
$$ | . X X . . . . . .
$$ | . . . . . . . . .
$$ | . . . . . . . . .[/go]
"The more we think we know about
The greater the unknown"

Words by neil peart, music by geddy lee and alex lifeson
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Re: Punishing joseki mistake (problem)

Post by HermanHiddema »

fwiffo wrote:This is what I had in mind. Maybe I'm wrong?
Click Here To Show Diagram Code
[go]$$Bm13
$$ ------------------
$$ | . . . . 6 . . . .
$$ | . b O 2 1 O 5 a .
$$ | . 4 X O O X O 7 .
$$ | . O O X X X . . .
$$ | . 3 X . . . . . .
$$ | . . . . . . . . .
$$ | . . . . . . . . .[/go]


Black :b15: in the above diagram is not sente, :w16: should defend at a instead. All white gets is a move at :w16: capturing 2 stones in gote. Big endgame, nothing more (White will get b in sente later)

Proper play:

Click Here To Show Diagram Code
[go]$$Bm13
$$ ------------------
$$ | . . . . . . . . .
$$ | . . O . 2 O 1 . .
$$ | . . X O O X O 3 .
$$ | . O O X X X . . .
$$ | . 4 X . . . . . .
$$ | . . 5 . . . . . .
$$ | . . . . . . . . .[/go]


This is proper play. White can choose not to play :w16: though, it is a push from behind on the second line, so it depends on the position whether it is good. White can wait anyway, a black move there is just large endgame, and currently gote.
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Re: Punishing joseki mistake (problem)

Post by entropi »

Click Here To Show Diagram Code
[go]$$Bm7
$$ ------------------
$$ | . . . . . . . . .
$$ | . . 6 . 8 2 7 . .
$$ | . 0 X O O 1 O a .
$$ | . 4 O X X 5 . . .
$$ | . 9 3 . . . . . .
$$ | . . . . . . . . .
$$ | . . . . . . . . .[/go]


In this diagram, wouldn't it be better to play white 16 at a, thus giving up two stones and avoiding being shut in?
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Re: Punishing joseki mistake (problem)

Post by Stable »

That's what herman is saying I think entropi. :)
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Re: Punishing joseki mistake (problem)

Post by entropi »

Stable wrote:That's what herman is saying I think entropi. :)


Oops my question was already answered by an earlier post :) Sorry, I should have read it more carefully, I just looked at the diagrams.
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