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Attacking a two space extension
http://www.lifein19x19.com/viewtopic.php?f=11&t=3311
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Author:  standardtrickyness [ Fri Feb 25, 2011 8:09 pm ]
Post subject:  Attacking a two space extension

how should you attack a two space extension assuming it is very close to your thickness? Image

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what should white do if white plays 9 to make a base near whites thickness?

Author:  Joaz Banbeck [ Fri Feb 25, 2011 8:28 pm ]
Post subject:  Re: Attacking a two space extension

standardtrickyness wrote:
...
what should white do if white plays 9 to make a base near whites thickness?


Pick up the stone as quickly as possible before black calls the TD.

Author:  EdLee [ Fri Feb 25, 2011 8:30 pm ]
Post subject: 

standardtrickyness wrote:
how should you attack a two space extension assuming it is very close to your thickness?
No general answer; that depends entirely on each unique board situation.
standardtrickyness wrote:
what should white do if white plays 9 to make a base near whites thickness?
Probably a typo around "9", missing a co-ordinate letter?
It's more helpful if you use a diagram or an SGF file.
You can read about diagrams here: viewtopic.php?f=5&t=226

Here's a start:
Click Here To Show Diagram Code
[go]$$
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . . . . . . . . . . . |
$$ | . . . X O . . . O . . . . . . . . . . |
$$ | . . X , O . . . . , . . . . . X . . . |
$$ | . . . X . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . X . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

Author:  Shaddy [ Fri Feb 25, 2011 8:30 pm ]
Post subject:  Re: Attacking a two space extension

That picture looks like the wrong answer diagram for a fuseki problem.. Also, I don't know what you're talking about because your words seem to have no relation to the picture.

Author:  standardtrickyness [ Sat Feb 26, 2011 7:45 pm ]
Post subject:  Re: Attacking a two space extension

well the source of the diagram isn't necessarily credible but it still doesn't answer how to attack a two space extension. (assuming you are very thick such as in the diagram. Assuming black makes a two space jump towards whites thickness how should white respond? (ie 1 and 2 are played) extending first from thickness doesn't seem like a good option.

Author:  Phelan [ Sun Feb 27, 2011 6:10 am ]
Post subject:  Re: Attacking a two space extension

Here are some possible attacks on a two space extension(diagram from senseis):
Click Here To Show Diagram Code
[go]$$B Some possible attacks
$$ ------------
$$ | . . . . . .
$$ | . . . . . .
$$ | . . . . X .
$$ | . . X , . .
$$ | . . . . . .
$$ | . . . . . .
$$ | . . 1 . . .
$$ | . d . . . .
$$ | . . O . . .
$$ | . . . a . .
$$ | . . . b . .
$$ | . . 2 . . .
$$ | . c . . . .
$$ | . . . . . .
$$ | . . X . . .
$$ | . . . , . .[/go]

Like has been said, it very much depends on the rest of the board, but you usually can't kill outright, even with a lot of thickness around.

Author:  dedroid [ Mon Feb 28, 2011 2:42 pm ]
Post subject:  Re: Attacking a two space extension

I think he meant this

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

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