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#239 SoDesuNe vs topazg
http://lifein19x19.com/viewtopic.php?f=37&t=10611
Page 4 of 10

Author:  Bill Spight [ Tue Jul 29, 2014 3:35 pm ]
Post subject:  Re: #239 SoDesuNe vs topazg

OK, I have unhidden #39. :)

Author:  Loons [ Tue Jul 29, 2014 4:37 pm ]
Post subject:  Re: #239 SoDesuNe vs topazg

@Uberdude (because I apparently have a vendetta against you (!?)) (and disagreeing with stronger players seems like a way of learning)
(Also not really hidden)
Click Here To Show Diagram Code
[go]$$Wcm10
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 5 . O . . . . . . . . . X . . . . |
$$ | . . . , . . . . . , . . . . . , X . . |
$$ | . . 4 . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 6 d . . . . . . . . . . . . . . . |
$$ | . . c . . . . . . . . . . . . . . . . |
$$ | . . . 3 . e . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
Your 'a' and 'b' may be miai for a base, but some animals are certainly more equal than others there. The possibility of something like c-d-e leaves a sour taste in my mouth alone.

(I realise this sounds like I'm talking up my idea from before, which I guess could be true)

Author:  EdLee [ Tue Jul 29, 2014 9:39 pm ]
Post subject: 

Hi Loons,
Locally, I also like to keep :b2: as an option to approach :w1:,
to keep things simple. I think of (x) and (y) as local follow ups.
And if there are more options in the (z) direction, so much the better for B:
Click Here To Show Diagram Code
[go]$$W
$$ +--------------------
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . x . 1 . . . . .
$$ | . . . , . . . . . ,
$$ | . . 2 . y . . . . .
$$ | . . . . . . . . . .
$$ | . . z . . . . . . .
$$ | . . . . . . . . . .[/go]

Author:  SoDesuNe [ Wed Jul 30, 2014 12:11 am ]
Post subject:  Re: #239 SoDesuNe vs topazg

Click Here To Show Diagram Code
[go]$$Wcm10
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . O . . . . . . . . . X . . . . |
$$ | . . 4 , 6 7 . . . , . . . . . , X . . |
$$ | . . . . 8 . . . . . . . . . . . . . . |
$$ | . . 5 . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . 3 . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . 2 . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . 1 . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

Click Here To Show Diagram Code
[go]$$Bcm17
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 4 2 O . . . . . . . . . X . . . . |
$$ | . . 5 , X O . . . , . . . . . , X . . |
$$ | . . 3 . 1 . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

I might have misjudged this situation. It now feels much more painful.

Click Here To Show Diagram Code
[go]$$Bcm22
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O O . . . . . . . . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . 1 O . . . . . . . . . . . . . . . . |
$$ | . 3 2 . . . . . . . . . . . . . . . . |
$$ | . 5 4 . . . . . . . . . . . . . . . . |
$$ | . . 6 . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

With these exchanges I just crawl along the second line and does not achieve much except trying to make live. And I don't even succeed without playing in the corner, too. (Locally at least, I have still access to the center but then I should omit these exchanges.)

Click Here To Show Diagram Code
[go]$$Bcm22
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O O . . . . . . . . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . 1 . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

I would like to play like this but it gets a bit more complicated then.

Click Here To Show Diagram Code
[go]$$Bcm22
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O O . . . . . . . . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . 3 O 2 . . . . . . . . . . . . . . . |
$$ | . 6 1 4 . . . . . . . . . . . . . . . |
$$ | . . 5 . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

Click Here To Show Diagram Code
[go]$$Bcm28
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O O . . . . . . . . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . 1 X . X . . . . . . . . . . . . . . |
$$ | . X O O . . . . . . . . . . . . . . . |
$$ | . O X O . . . . . . . . . . . . . . . |
$$ | . 2 X . . . . . . . . . . . . . . . . |
$$ | . 4 3 . . . . . . . . . . . . . . . . |
$$ | . . 5 O . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

Like this it seems I'm fine. White can sacrficice some stones and make thick center shape but I guess I'm happy to have been forced to live then.

If White drops down instead of extending, I should be fine, too. But I have to keep an eye on things there. The Aji most certainly is a nasty one.

Author:  topazg [ Wed Jul 30, 2014 2:42 am ]
Post subject:  Re: #239 SoDesuNe vs topazg

Click Here To Show Diagram Code
[go]$$Wcm10
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . 9 O . . . . . . . . . X . . . . |
$$ | . . 4 , 6 7 . . . , . . . . . , X . . |
$$ | . . . . 8 . . . . . . . . . . . . . . |
$$ | . . 5 . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . 3 . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . 2 . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . 1 . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]


Again as per plan. Decided I will go with my previous var instead of the 3-3 next move. I should hopefully get sente from it I think to throw an extra stone in the bottom left corner, probably like this:

Click Here To Show Diagram Code
[go]$$Wcm18
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 4 1 O . . 7 . . . . . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . . 2 . X . . . . . . . . . . . . . . |
$$ | . . O . . 6 . 0 . . . . . . . . . . . |
$$ | . . . 3 . 5 8 . . . . . . . . . . . . |
$$ | . . . . . 9 . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . a . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]


Should :w24: go high? One space further? I'm not sure, but I don't want him pincering the group, so this feels about right.. :w28: @ "a" is my current plan

Author:  SoDesuNe [ Wed Jul 30, 2014 3:17 am ]
Post subject:  Re: #239 SoDesuNe vs topazg

Click Here To Show Diagram Code
[go]$$Wcm10
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . 9 O . . . . . . . . . X . . . . |
$$ | . . 4 , 6 7 . . . , . . . . . , X . . |
$$ | . . 0 . 8 . . . . . . . . . . . . . . |
$$ | . . 5 . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . 3 . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . 2 . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . 1 . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

Author:  topazg [ Wed Jul 30, 2014 5:33 am ]
Post subject:  Re: #239 SoDesuNe vs topazg

Click Here To Show Diagram Code
[go]$$Wcm20
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O O . . . . . . . . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . 1 . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]


As per plan ..

Click Here To Show Diagram Code
[go]$$Wcm20
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 2 O O . b 5 a c c c . . B . . . . |
$$ | . . X , X O . a . , . . . . . , X . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . O . . 4 . 8 . . . . . . . . . . . |
$$ | . . . 1 . 3 6 . . . . . . . . . . . . |
$$ | . . . . . 7 . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . 9 . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]


On further consideration, either "a" points seem to leave horrible aji at "b", so I think I have to play this way. Black extending around "c" isn't as big as it looks because the marked Black stone is low, so it'll depend on some detailed eye-space reading as to how I respond to any of those. Fun fun.

Author:  Bill Spight [ Wed Jul 30, 2014 6:36 am ]
Post subject:  Re: #239 SoDesuNe vs topazg

Well, we are not going to reach this position, but, . . .

Click Here To Show Diagram Code
[go]$$Wcm20
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 1 O O . . . . . . . . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 2 . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . W . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]


:b21: is the usual joseki move. It looks OK, even with the :wc: stone.

Author:  SoDesuNe [ Wed Jul 30, 2014 12:55 pm ]
Post subject:  Re: #239 SoDesuNe vs topazg

Huh... That was unexpected - I guess I'm relieved? Looks like a move for a 4*4 Joseki, doesn't it?

I don't know, I got a headache, so no move from me today.

Author:  EdLee [ Wed Jul 30, 2014 1:44 pm ]
Post subject: 

Only move ?
Click Here To Show Diagram Code
[go]$$B
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 1 O O . . . . . . . . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . W . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

Author:  Bill Spight [ Wed Jul 30, 2014 3:45 pm ]
Post subject:  Re: #239 SoDesuNe vs topazg

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


:b1: - :w10: is joseki without :wc:.

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


Old joseki, also without :wc:.

Edit: If :b1:, maybe White should omit :w2: because of :wc:.

Author:  SoDesuNe [ Wed Jul 30, 2014 11:41 pm ]
Post subject:  Re: #239 SoDesuNe vs topazg

Click Here To Show Diagram Code
[go]$$Wcm20
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 2 O O . . . . . . . . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . 1 . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

Hard to chose any other move. With this I'm alive and White needs to defend his top group, giving me the initiative.

Click Here To Show Diagram Code
[go]$$Wcm20
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 2 O O . . . 3 . . . . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . 1 . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . , . . . . . , . . . |
$$ | . c a . . . . . . . . . . . . . X . . |
$$ | . . 4 d . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . b . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

I'm thinking about attack with :b23: then. Although :w20: is a defensive move, I still think the group still has its weaknesses.
I guess 'a' to 'c' are possible answers for White. 'd', too, maybe as in it's a legal move but I don't think it's really good here.

Click Here To Show Diagram Code
[go]$$Bcm23 Variation 'a' - 1
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X O O . . . O . . . . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . a . . . , . . . . . , . . . |
$$ | . . 2 . . . . . . . . . . . . . X . . |
$$ | . . 1 3 . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . b . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

'a' seems good shape but 'b' is a likely KGS-response : D

Click Here To Show Diagram Code
[go]$$Bcm23 Variation 'a' - 1a - 1
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X O O . . . O . . . . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . 4 . . . , . . . . . , . . . |
$$ | . . 2 . . . . . . . . . . . . . X . . |
$$ | . . 1 3 . 9 . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . 5 7 . . . . . . . . . . . . . O . . |
$$ | . 6 8 O . 0 . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

Maybe something like this? Maybe even :b29: at :b30: when I have a nice sacrifice to make shape.
I guess I also have to count soon because a move like :w32: looks very big since my own group doesn't make much territory.

Click Here To Show Diagram Code
[go]$$Bcm23 Variation 'a' - 1a - 2
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X O O . . . O . . . . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . 4 . . . , . . . . . , . . . |
$$ | . . 2 . . . . . . . . . . . . . X . . |
$$ | . . 1 3 . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . b . . . . . . . . . . . . X . . . |
$$ | . . a . . . . . . . . . . . . . O . . |
$$ | . 5 . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

If I could play :b27: here that would be even better. But I'm afraid 'a' or 'b' are good counterplays. Right now, I don't see them work, though.

Click Here To Show Diagram Code
[go]$$Bcm23 Variation 'a' - 1b - 1
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X O O . . . O . . . . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O 5 . . . . , . . . . . , . . . |
$$ | . . 2 . . . . . . . . . . . . . X . . |
$$ | . . 1 3 . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 4 . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

I think like this I'm fine.

Click Here To Show Diagram Code
[go]$$Bcm23 Variation 'b' - 1
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X O O . . . O . . . . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . b O . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . 1 . a . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 2 . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

Dividing with 'a' or settling with 'b'?

Click Here To Show Diagram Code
[go]$$Bcm23 Variation 'b' - 1a
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X O O . . . O . . . . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . 6 . . . , . . . . . , . . . |
$$ | . . 4 . . . . . . . . . . . . . X . . |
$$ | . 5 1 . 3 . . . . . . . . . . . . . . |
$$ | . . a . . . . . . . . . . . . . . . . |
$$ | . . 2 . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

I'm not particulary a fan of this sequence so I guess I'm more keen on settleling. I guess I could change :b27: to 'a' to make it not so easy for White but I don't really like this either.

Click Here To Show Diagram Code
[go]$$Bcm23 Variation 'b' - 1b
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X O O . . . O . . . . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . b 4 . . . . . . . . . . . . . . . . |
$$ | . . 3 O . . . . . , . . . . . , . . . |
$$ | . . . a . . . . . . . . . . . . X . . |
$$ | . . 1 . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 2 . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

After :w26: I could play for a Ko with 'a' or for shape with 'b'. The Ko would be enormously big and I have to find the first threat. I guess that would be an overplay?

Click Here To Show Diagram Code
[go]$$Bcm23 Variation 'b' - 1bb
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X O O . . . O . . . . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . 5 4 . . . . . . . . . . . . . . . . |
$$ | . a 3 O . . . . . , . . . . . , . . . |
$$ | . . b . . . . . . . . . . . . . X . . |
$$ | . . 1 . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 2 . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

'a' and 'b' again but I don't go in that much detail just yet. Let's see what he does first and maybe I also come up with another plan ^^

Like:
Click Here To Show Diagram Code
[go]$$Wcm20
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 2 O O . . . 3 . 4 . . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . 1 . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

If he extends to :w22:, I wonder if :b23: is as forcing and urgent as it is big...

Author:  Uberdude [ Thu Jul 31, 2014 12:15 am ]
Post subject:  Re: #239 SoDesuNe vs topazg

SoDesuNe wrote:
Click Here To Show Diagram Code
[go]$$Wcm20
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 2 O O . . . . . . . . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . 1 . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

Hard to chose any other move. With this I'm alive and ...


Indeed the only move, but it's not quite true to say this makes black locally alive. There is a famous tsumego arising from this shape when it is surrounded. For example if black doesn't defend with 27 and tenukis a lot:

Click Here To Show Diagram Code
[go]$$Wcm20
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 2 O O . . 5 . . . 8 . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . O . . 4 9 . . . . . . . . . . . . |
$$ | . . . 1 . 3 6 . . . . . . . . . . . . |
$$ | . . . . . 7 . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X 0 . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]


Click Here To Show Diagram Code
[go]$$Wcm30
$$ +---------------------------------------+
$$ | . a . . . . . . . . . . . . . . . . . |
$$ | . 5 6 . . . . . . . . . . . . . . . . |
$$ | . . X O O . . O . . . X . . X . . . . |
$$ | . 4 X , X O . . . , . . . . . , X . . |
$$ | . 3 X . X . . . . . . . . . . . . . . |
$$ | . 7 O . . X O 1 . . . . . . . . . . . |
$$ | . . . O . O X . . . . . . . . 2 . . . |
$$ | . . . . . O . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X X . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]


Then the 32 34 combo kills the corner. Note the order, if you play 2-2 first then black answers the b15 hane at a and lives.

So while any kill is a long way off, black should be aware of this threat if his group loses access to the centre (or a spare eye there, d14 could make another eye so w may need to play d16 push which lets black give the tail, Edit: or if answer taking the liberty makes f17 squeeze work so hmmm...).

Author:  Bill Spight [ Thu Jul 31, 2014 12:39 am ]
Post subject:  Re: #239 SoDesuNe vs topazg

SoDesuNe's post exploring a potential :b23: prompts me to write a little about the calculation of variations. Note that he has 9 diagrams for one candidate move and 1 diagram for another. Now, without breathing hard I can come up with 8 or more candidate moves. This is not a criticism, because SoDesuNe probably considered candidates that he did not bother to make diagrams for. But he did explore a number of variations starting with only one candidate move.

That, I think, is the result of pursuing a general strategy of depth first search. One property of depth first search, by comparison with breadth first search, is that it uses less memory. Conscious human working memory is surprisingly small. Which may explain the human preference for depth first search.

One thing to do is to take a little time to identify candidate moves before exploring one in depth. That way we will be less likely to overlook a good move. (Consider Uberdude's advice to indentify at least three candidates.) SoDesuNe does that when considering possible replies to one candidate for :b23:. But he does not do that in his note for :b23: itself. Maybe he did in his thinking, maybe not.

Author:  skydyr [ Thu Jul 31, 2014 6:30 am ]
Post subject:  Re:

EdLee wrote:
Only move ?
Click Here To Show Diagram Code
[go]$$B
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 1 O O . . . . . . . . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . W . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

I'm not sure I like the prospect of being sealed in or almost sealed in gote, so I'd consider some sort of center move, but that base is so important, I'm inclined to agree with you.

Author:  topazg [ Fri Aug 01, 2014 4:13 am ]
Post subject:  Re: #239 SoDesuNe vs topazg

Click Here To Show Diagram Code
[go]$$Wcm20
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 2 O O . . . . . . . . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . 1 . 3 . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]


As per plan...

Some further explanations: Firstly, I'm sort of vaguely remembering this being joseki at some point, so I'm hoping it's globally ok here (never a guarantee with any joseki), but I'm choosing it more because I want to induce Black to settle the top for me a bit, and all of these moves have value if/when Black tries to handle the left hand side. By adding a bit of three dimensional depth to my moyo at the edges, I get more freedom to make territory making choices depending on how he chooses to play.

Author:  SoDesuNe [ Fri Aug 01, 2014 11:06 am ]
Post subject:  Re: #239 SoDesuNe vs topazg

Click Here To Show Diagram Code
[go]$$Wcm20
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 2 O O . . . . . . . . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . O . . . 4 . . . . . . . . . . . . |
$$ | . . . 1 . 3 . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . O . . O . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

Surpised again.

First instinct is this. In a blitz game I would not even think twice ^^

But for the sake of showing my flaws in judgement and reading, I will try to add some variations and explanations first. I guess I also have to count soon.

Next time : D


After writing I began to not like :b23:. Why do I want to break out when I could attack the upper White group a bit more severely?

Author:  EdLee [ Fri Aug 01, 2014 1:37 pm ]
Post subject: 

SoDesuNe wrote:
Click Here To Show Diagram Code
[go]$$Wm20
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 2 O O . . . . . . . . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . . X . X a . . . . . . . . . . . . . |
$$ | . . O . c b 4 . . . . . . . . . . . . |
$$ | . . . 1 . 3 . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |[/go]
W has a push-and-cut: :white:(a) - :black:(b) - :white:(c).

Or, :black: can turn at (a) directly.

Author:  skydyr [ Fri Aug 01, 2014 2:38 pm ]
Post subject:  Re:

EdLee wrote:
SoDesuNe wrote:
Click Here To Show Diagram Code
[go]$$Wm20
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 2 O O d . . . . . . . . X . . . . |
$$ | . . X , X O . . . , . . . . . , X . . |
$$ | . . X . X a . . . . . . . . . . . . . |
$$ | . . O . c b 4 . . . . . . . . . . . . |
$$ | . . . 1 . 3 . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . X . . |[/go]
W has a push-and-cut: :white:(a) - :black:(b) - :white:(c).

Or, :black: can turn at (a) directly.

Black also has a countercut at D in the diagram which could make things exciting, so white may not want to cut right away.

Author:  EdLee [ Fri Aug 01, 2014 4:05 pm ]
Post subject: 

skydyr wrote:
Black also has a countercut at D in the diagram which could make things exciting, so white may not want to cut right away.
Click Here To Show Diagram Code
[go]$$W
$$ +--------------------
$$ | . . . . . . . . . .
$$ | . . . . . 6 . . . .
$$ | . . X O O 4 5 . . .
$$ | . . X , X O 7 . . ,
$$ | . . X . X 1 . . . .
$$ | . . O . 3 2 X . . .
$$ | . . . O . O . . . .
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . O . . . . . ,
$$ | . . . . . . . . . .[/go]
Yes, W could give up the 2 corner stones if it's bigger to cut off the :b2: group.
So yes, the timing is important and depends on the global situation.

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