Attatchment Tesuji

Gegenzeit · Post by **Gegenzeit** » Fri Jul 27, 2012 9:18 am

Hi,

I'm currently studying tesuji with the help of Tesuji by James Davies. Sadly, from time to time I do not even get the explanations

Here black is to play. The solution says black is to play the attatchment tesuji a, threatening the driving tesuji at b.

Click Here To Show Diagram Code: [go]$$c tsumego //Tesuji p.173 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . O X . . . . . . . . . . . . . | $$ | . O O O O X . a O . . . . . . . . . . | $$ | . O X X X O . . . , . . . . . , . . . | $$ | . X X . . b . . . . . . . . . . . . . | $$ | . . O X . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

I guess it would look like this (white tenukis). White would get pushed around.

Click Here To Show Diagram Code: [go]$$c white tenukis $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . O X . . . . . . . . . . . . . | $$ | . O O O O X . 1 O . . . . . . . . . . | $$ | . O X X X O 4 5 . , . . . . . , . . . | $$ | . X X . . 3 . . . . . . . . . . . . . | $$ | . . O X . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . 2 . | $$ ---------------------------------------[/go]

To avoid that white should play like here. Black comes out.

Click Here To Show Diagram Code: [go]$$c tsumego // solution p. 174 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . O X . . . . . . . . . . . . . | $$ | . O O O O X . 1 O . . . . . . . . . . | $$ | . O X X X O . 3 . , . . . . . , . . . | $$ | . X X . . 2 . . . . . . . . . . . . . | $$ | . . O X . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Sadly, the book does not explain why these are the best moves. And frankly, I do not get it. If white plays 2, the driving trsuji does not work anymore.

Click Here To Show Diagram Code: [go]$$c ?!? $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . O X . . . . . . . . . . . . . | $$ | . O O O O X . 1 O . . . . . . . . . . | $$ | . O X X X O 4 2 . , . . . . . , . . . | $$ | . X X . . 3 . . . . . . . . . . . . . | $$ | . . O X . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

I also can't find another move for black to counter the hane. So, to my question (finally). How to punish white 2:

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

thanks!

jts · Post by **jts** » Fri Jul 27, 2012 9:23 am

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

This looks better for B than the driving tesuji... W has more blighted stones, no?

Gegenzeit · Post by **Gegenzeit** » Sat Jul 28, 2012 1:49 am

Hi & thanks. Sometimes one does not see the most simple things

EdLee · Post by **EdLee** » Sat Jul 28, 2012 4:06 am

For completeness, notice the broken shapes for W:

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

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

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