Life In 19x19
http://www.lifein19x19.com/

Joseki question
http://www.lifein19x19.com/viewtopic.php?f=15&t=3759
Page 1 of 1

Author:  dedroid [ Thu Apr 28, 2011 11:35 pm ]
Post subject:  Joseki question

hello, i was playing a game and this move came up and i can't find reference for it anywhere, so i was hoping i could get some help here.



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



so far i've thought about these two moves

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


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


but i don't really know where to go from here

Author:  mw42 [ Fri Apr 29, 2011 12:30 am ]
Post subject:  Re: Joseki question

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

I'd play this move and be satisfied. Black's approach stone seems awkward now and if he wants to live on top he has to crawl. Separating seems important, but

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

This move is immediately bad shape for white, and it leaves black with (a) which threatens to connect and helps his shape on the side.

This move is almost definitely not joseki, it reeks of a trick play to me so maybe someone more educated in those matters can be more helpful.

Author:  Shaddy [ Fri Apr 29, 2011 3:44 am ]
Post subject:  Re: Joseki question

mw42 wrote:
Click Here To Show Diagram Code
[go]$$
$$ ----------------
$$ | . . . . . . . .
$$ | . . X . . . . .
$$ | . . Q O . . . .
$$ | . . . , . . . .
$$ | . . . X . . . .
$$ | . . . . . . . .
$$ | . . . . . . . .[/go]

I'd play this move and be satisfied. Black's approach stone seems awkward now and if he wants to live on top he has to crawl. Separating seems important, but

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

This move is immediately bad shape for white, and it leaves black with (a) which threatens to connect and helps his shape on the side.

This move is almost definitely not joseki, it reeks of a trick play to me so maybe someone more educated in those matters can be more helpful.


I'd definitely play the second diagram. I can't find anything actually wrong with it, and the first one sets my trick play alarm off.

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


For example, what now?

Author:  mw42 [ Fri Apr 29, 2011 4:55 am ]
Post subject:  Re: Joseki question

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

I don't know, maybe just attach underneath? If black pushes to make a wall, it has a weakness at (a) so maybe this is not so good.

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

If black plays hane then white can cross-cut. He has a two-stone wall to help him in a fight.

Author:  mw42 [ Fri Apr 29, 2011 5:07 am ]
Post subject:  Re: Joseki question

Also it looks like the intention of :b1: might be to seal white in, if that is the case perhaps this is playable (the assumption being the outside is important)

Click Here To Show Diagram Code
[go]$$Bm1 :wt: still has a lot of aji...
$$ ----------------
$$ | . . . . . . . .
$$ | . . X . . . . .
$$ | . . Q Q 5 1 4 .
$$ | . . . , 3 2 6 .
$$ | . . . X . . . .
$$ | . . . . . . . .
$$ | . . . . . . . .[/go]


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

Author:  Harleqin [ Fri Apr 29, 2011 8:33 am ]
Post subject:  Re: Joseki question

I actually had a similar situation in a recent game of mine.

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



I played :w2:, and Black took :b3:. I think that it is not easy to answer.

Do you think that this is sufficient for White?

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


How urgent do you think is :w10:?

Author:  Solomon [ Fri Apr 29, 2011 8:37 am ]
Post subject:  Re: Joseki question

mw42 wrote:
Also it looks like the intention of :B1: might be to seal white in, if that is the case perhaps this is playable (the assumption being the outside is important)

Click Here To Show Diagram Code
[go]$$Bm1 :wt: still has a lot of aji...
$$ ----------------
$$ | . . . . . . . .
$$ | . . X . . . . .
$$ | . . Q Q 5 1 4 .
$$ | . . . , 3 2 6 .
$$ | . . . X . . . .
$$ | . . . . . . . .
$$ | . . . . . . . .[/go]


Click Here To Show Diagram Code
[go]$$Bm1
$$ ----------------
$$ | . . . . . . . .
$$ | . . X 7 . . . .
$$ | . . O O 5 1 4 .
$$ | . . . , 3 2 6 .
$$ | . . . X . . . .
$$ | . . . . . . . .
$$ | . . . . . . . .[/go]

This is simply terrible for White, unplayable.

Author:  aurik [ Fri Apr 29, 2011 10:43 am ]
Post subject:  Re: Joseki question

Harleqin wrote:
I actually had a similar situation in a recent game of mine.

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



This perhaps exposes the trick play? The normal joseki I see when 3 is played is usually:

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


Obviously at this point responding to a at b would be a grave error:
Click Here To Show Diagram Code
[go]$$
$$ ----------------
$$ | . . . . . . . .
$$ | . . X 1 O 2 . .
$$ | . 3 O O X O . .
$$ | . 5 4 , X . . .
$$ | . 8 6 X . . . .
$$ | . 9 7 . . . . .
$$ | . . . . . . . .[/go]


However, your W4 looks to be an excellent result for W.

Author:  dedroid [ Fri Apr 29, 2011 5:03 pm ]
Post subject:  Re: Joseki question

thanks for all the help! all of this is really helpful.

Author:  Bill Spight [ Fri Apr 29, 2011 5:18 pm ]
Post subject:  Re: Joseki question

Hmmm. What about something like this?

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


:w1: threatens 2.

Compare with this:

Click Here To Show Diagram Code
[go]$$Bc
$$ -----------------------
$$ | . . . . . . . . . . .
$$ | . . B . . . . . . . .
$$ | . . 1 W . 2 . . 4 . .
$$ | . . . , . . . . . , .
$$ | . . . 3 . . . . . . .
$$ | . . . . . . . . . . .
$$ | . . . . . . . . . . .[/go]


:b1: - :w4: is joseki, but then the exchange of :wc: and :bc: is bad for Black.

Author:  dedroid [ Sat Apr 30, 2011 7:42 pm ]
Post subject:  Re: Joseki question

I wouldn't mind that result as black. black gets sente and some nice corner.

Author:  Dusk Eagle [ Sat Apr 30, 2011 9:51 pm ]
Post subject:  Re: Joseki question

Quote:
but then the exchange of :wc: and :bc: is bad for Black.

It is? It looks like a bad exchange for white to me.

Page 1 of 1 All times are UTC - 8 hours [ DST ]
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
http://www.phpbb.com/