Life In 19x19

Posted: **Mon Mar 14, 2011 1:32 pm**

In this article of Go World, Ayumi Suzuki explains some middle game joseki.

She takes a look at the sanrensai opening and explains that the point A is a key point for invasion (although it may be a little early to invade in this situation):

Attaching on top is natural for black. Now the question is in which direction should white extend. Extending upwards leads to this sequence:

This is quite a painful shape for White.

So the extension of White 1 in the other direction is right, after which the connection of Black 2 is correct (... explanation omitted here ...):

The point of A is open this time, so Black can't attach at B.

This sounds as if it is obvious - but I can't see it. Any ideas?

Posted: **Mon Mar 14, 2011 2:45 pm**

The book "Get Strong at Invading" contains a lot of this kind of joseki. Still on my to-do-list.

Posted: **Mon Mar 14, 2011 3:25 pm**

I believe the reason why black can't attach at B is because

is now sente (and living) since black has so many cuts in his wall.

Click Here To Show Diagram Code: [go]$$Bc $$ +---------------------------------------+ $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . O . . . . . | $$ | . . . . . . . . . . . X . O . O O . . | $$ | . . . O . . . . . , . . . . X X X . . | $$ | . . . . . . . . . . . . X . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . X X . . | $$ | . . X , . . . . . , . . . . . X O . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . . . . . . . . . . . . . . X O . . | $$ | . . . . . . . . . . . . . . . X O . . | $$ | . . . X . . . . . . . . . . . X W . . | $$ | . . . . . . . . . . . . . . X O O O . | $$ | . . . , . O . . . O . . . . . X X X . | $$ | . . . O . . . . . . . . . O . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ +---------------------------------------+[/go]

Posted: **Mon Mar 14, 2011 4:13 pm**

mw42 wrote:I believe the reason why black can't attach at B is because is now sente (and living) since black has so many cuts in his wall.

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

hum~~

no!
below shape i think white will cut then black is in trouble. (dont ask me how..but it is just a feeling)

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

Life In 19x19

Middle-Game Josekis by Suzuki Ayumi 4p, Go World 121 2009-10

Middle-Game Josekis by Suzuki Ayumi 4p, Go World 121 2009-10

Re: Middle-Game Josekis by Suzuki Ayumi 4p, Go World 121 200

Re: Middle-Game Josekis by Suzuki Ayumi 4p, Go World 121 200

Re: Middle-Game Josekis by Suzuki Ayumi 4p, Go World 121 200