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 Post subject: "Double 3-4" fuseki question
Post #1 Posted: Tue Aug 31, 2010 7:23 pm 
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Hi,

I couldn't find a page about this on Sensei's Library. Is there a name for it so I can look it up? A few times this week someone has played this fuseki against me and I'm not always quite sure what to do:

Click Here To Show Diagram Code
[go]$$
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . 3 . . . |
$$ | . . . 4 . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . b c . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , a . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . 2 . . . . . , . . . . . , 1 . . |
$$ | . . . . . . . . . . . . . . 5 . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


What next for White? I've only ever tried A or B (usually B), and what is Black's response? Usually in my games, I play White B and Black responds with C - but I suspect there are other options. I'm curious about this opening and would appreciate and details you can provide.

Thanks.

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 Post subject: Re: "Double 3-4" fuseki question
Post #2 Posted: Tue Aug 31, 2010 7:27 pm 
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I found this on SL: http://senseis.xmp.net/?path=OverviewOfFusekiPatterns&page=ParallelFusekiBlackEnclosure

I'll let you know if I come across anything else ...

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 Post subject: Re: "Double 3-4" fuseki question
Post #3 Posted: Tue Aug 31, 2010 9:21 pm 
Gosei
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This is my favorite fuseki as black, I play it almost exclusively :D . The most common reply is just what you described:

Click Here To Show Diagram Code
[go]$$Wcm1
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . 6 . X . . . |
$$ | . . . O . . . . . , . . . . . , 4 . . |
$$ | . . . . . . . . . . . . . . . 1 2 . . |
$$ | . . . . . . . . . . . . . . . . 3 . . |
$$ | . . . . . . . . . . . . . . . 5 . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . 7 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . a . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


The followup at ''a'' is big, but black can also approach one of the other corners. Many pros have played this way, I'd say it's standard. More recently, a new sequence has become popular:

Click Here To Show Diagram Code
[go]$$Wcm1
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . O . . . . . , . . . . . , 4 . . |
$$ | . . . . . . . . . . . . . . . 1 2 . . |
$$ | . . . . . . . . . . . . . . . . 3 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . , . . . . . , X 5 . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


It's discussed in detail here: http://senseis.xmp.net/?BQM497

Sensei's Position search is fairly useful. Here are two recent pro games with the fuseki:
http://senseis.xmp.net/?11thNongshimCup%2FStage2Game1
http://senseis.xmp.net/?11thNongshimCup%2FStage2Game6

Hane Naoki plays it pretty frequently, so if you're curious you might look through some of his games.

The only other thing I'd say is that the move at ''a'' in your diagram is almost never played by pros, and I think it's bad because it allows two enclosures.

Click Here To Show Diagram Code
[go]$$ Good for black
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . 3 . . . |
$$ | . . . 4 . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . 7 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , 6 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . 2 . . . . . , . . . . . , 1 . . |
$$ | . . . . . . . . . . . . . . 5 . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


In my games against other kyu players I see the wedge pretty often, and I'm always happy to make the second enclosure. Note that this is considered ok here:
Click Here To Show Diagram Code
[go]$$
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . 4 . . . . . , . . . . . 3 . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , 6 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . 2 . . . . . , . . . . . , 1 . . |
$$ | . . . . . . . . . . . . . . 5 . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


because the enclosure isn't made.


This post by emeraldemon was liked by 2 people: Gresil, Joaz Banbeck
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 Post subject: Re: "Double 3-4" fuseki question
Post #4 Posted: Wed Sep 01, 2010 9:34 am 
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Thanks for the answers (and Senseis' links) - I definitely have to try this opening as Black now. It will be a nice change from nirensei and sanrensei.

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 Post subject: Re: "Double 3-4" fuseki question
Post #5 Posted: Wed Sep 01, 2010 9:48 am 
Gosei
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I always play this as black.

Click Here To Show Diagram Code
[go]$$Bcm1
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . 5 . . . . |
$$ | . . . 4 . . . . . , . . . . . , 1 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . 7 . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . a . . |
$$ | . . . . . . . . . . . . . . . 6 . . . |
$$ | . . . 2 . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . 3 . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


I would say 60-70% of games where I play black start like this. "a" is a possibility for :w6: if you don't like the pincer.

EDIT: had the colors backwards... :oops:

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Last edited by daniel_the_smith on Wed Sep 01, 2010 11:44 am, edited 1 time in total.
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 Post subject: Re: "Double 3-4" fuseki question
Post #6 Posted: Wed Sep 01, 2010 11:03 am 
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I play this fuseki almost exclusively as Black. If you wish, we could play a few games as we are about the same level.

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 Post subject: Re: "Double 3-4" fuseki question
Post #7 Posted: Wed Sep 01, 2010 12:56 pm 
Gosei
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I guess I'm not the only one who likes this opening! Just for fun, here's the last game I played as black on KGS (need to play more):



Feel free to offer advice or questions!

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 Post subject: Re: "Double 3-4" fuseki question
Post #8 Posted: Wed Sep 01, 2010 5:05 pm 
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emeraldemon wrote:
The only other thing I'd say is that the move at ''a'' in your diagram is almost never played by pros, and I think it's bad because it allows two enclosures.

Click Here To Show Diagram Code
[go]$$ Good for black
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . 3 . . . |
$$ | . . . 4 . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . 7 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , 6 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . 2 . . . . . , . . . . . , 1 . . |
$$ | . . . . . . . . . . . . . . 5 . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]



I don't think two enclosures are the reason why :w6: is not played by pros, because the following situation is considered ok, and black gets two enclosures here, too.

Click Here To Show Diagram Code
[go]$$ Ok for both.
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . 3 . . . |
$$ | . . . 4 . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . 7 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . 6 . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . a . . |
$$ | . . . . . . . . . . . . . . . . 8 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . 2 . . . . . , . . . . . , 1 . . |
$$ | . . . . . . . . . . . . . . 5 . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


I can only guess why this is better than your diagram. My first guess would be that after :b7: at a, :w8: at 7 is a good point. This would be a bit thin with the white stone under the star point. My second guess is that it has something to do with playing away from positions of strength. White got an ideal two space extension, and still has a comfortable safety distance to the black position on both sides.

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 Post subject: Re: "Double 3-4" fuseki question
Post #9 Posted: Wed Sep 01, 2010 10:05 pm 
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Pros play this opening. I've seen it many times in pro games.

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 Post subject: Re: "Double 3-4" fuseki question
Post #10 Posted: Wed Sep 01, 2010 11:02 pm 
Gosei
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Click Here To Show Diagram Code
[go]$$ Possibilities
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . a b . . |
$$ | . . . . . . . . . . . . . . . e c . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . d . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


I have 2251 games with this position (searching only the right side). The followups for white are:
a - 1437 times
b - 499 times
c - 217 times
d - 54 times
e - 33 times
other - 11 times

So yes, d is played occasionally, but the approach is overwhelmingly more common.

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 Post subject: Re: "Double 3-4" fuseki question
Post #11 Posted: Thu Sep 02, 2010 11:42 am 
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flOvermind wrote:
emeraldemon wrote:
Click Here To Show Diagram Code
[go]$$ Ok for both.
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . 3 . . . |
$$ | . . . 4 . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . 7 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . 6 . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . a . . |
$$ | . . . . . . . . . . . . . . . . 8 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . 2 . . . . . , . . . . . , 1 . . |
$$ | . . . . . . . . . . . . . . 5 . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


Is this really considered okay? Black gets two shimari and sente to boot. It may be playable, but I'd wager most players prefer black.

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Post #12 Posted: Thu Sep 02, 2010 6:37 pm 
Gosei
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it was flovermind, not me, who wrote "ok for black" there. my point by quoting the numbers is that pros very rarely play that way, so I don't think amateurs should either :)

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Post #13 Posted: Fri Sep 03, 2010 4:31 am 
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Personally I wouldn't play that way. I would prefer black there, too. But pros do play it. 54 games out of 2251 is not much, but it's enough to assume it's not particularly bad for either player ;)

But I find it interesting that the move under the star point seems to be not played at all by pros. The two shimari can't be the reason, because that would apply to all moves that split the side instead of approaching the corner. I can't find a single game with the move directly under the star point, but the two moves next to it seem to be played occasionally. Although the one nearer to the shimari may have been an experiment, since I can only find three games, all three by the same player and in the same tournament (and all three lost ;)).

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Post #14 Posted: Fri Sep 03, 2010 4:53 am 
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Two shimaris, of which the lower right cannot develop in the direction it would like, no hopes of developing the right hand side, and White has a 4-4 on the other two corners? I'd be happy enough with either here.

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Post #15 Posted: Sun Sep 12, 2010 8:28 pm 
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flOvermind wrote:
Personally I wouldn't play that way. I would prefer black there, too. But pros do play it. 54 games out of 2251 is not much, but it's enough to assume it's not particularly bad for either player ;)

But I find it interesting that the move under the star point seems to be not played at all by pros. The two shimari can't be the reason, because that would apply to all moves that split the side instead of approaching the corner. I can't find a single game with the move directly under the star point, but the two moves next to it seem to be played occasionally. Although the one nearer to the shimari may have been an experiment, since I can only find three games, all three by the same player and in the same tournament (and all three lost ;)).

Click Here To Show Diagram Code
[go]$$ Good for black
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . 3 . . . |
$$ | . . . 4 . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . 9 . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . 7 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , 6 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . 8 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . 2 . . . . . , . . . . . , 1 . . |
$$ | . . . . . . . . . . . . . . 5 . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]



This is my favourite response for white 6 from this pattern, which strengthens black's territory, and puts pressure on white to maintain a base. While white can theoretically tenuki at this point, the group is far from strong or settled, and can be harassed for profit later in the game.

White one higher removes the strong response of 7 from the table, and white instead takes a second enclosure, making it slightly better for white.

That said, not many pros like this sequence for white. There's probably a reason why, yes? The approaches are usually better.

Amusingly, I've just begun reading Sakata Eio's Modern Joseki and Fuseki, and this sequence, (with different white moves for 2 and 4) is the focus of the first discussion, particularly white's response to black 5 enclosure.

I'm still trying to fully understand all the proper responses, but Sakata seems to say that the low approach is a good one even though white is likely to be loosely pincered..

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

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 Post subject: Re: "Double 3-4" fuseki question
Post #16 Posted: Sun Sep 12, 2010 10:54 pm 
Gosei
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I play this opening frequently too, so I guess I'll chime in.

Click Here To Show Diagram Code
[go]$$
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . 3 . . . |
$$ | . . . 4 . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . 8 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , 6 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . 7 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . 2 . . . . . , . . . . . , 1 . . |
$$ | . . . . . . . . . . . . . . 5 . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
I've found I prefer something like this to making the second shimari. I don't think either player is particularly ahead.


Also, for the longest time, I thought this was a rare opening. Probably because I play this frequently:
Click Here To Show Diagram Code
[go]$$
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . 3 . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , 1 . . |
$$ | . . . . 2 . . . . . . . . . 4 . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]



PS: I believe that the idea of those territorial pincers here being too good for black is antiquated, dating maybe to classical go.


Bonus Material
Click Here To Show Diagram Code
[go]$$Wcm1 Who knows their enclosure joseki
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . 4 . . . . |
$$ | . . . . . . . . . . . . . . . X 3 . . |
$$ | . . . O . . . . . , . . . . . , . 8 . |
$$ | . . . . . . . . . . . . . . 0 X 2 7 . |
$$ | . . . . . . . . . . . . . . 6 5 1 9 . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X W . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
This family of invasions might be worth knowing. (that is, exploiting the weakness at :w1: - 11 is the marked stone.

Click Here To Show Diagram Code
[go]$$W
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . O . . . . . , . . . 0 . , . 8 . |
$$ | . . . . . . . . . . . . . . B X 2 7 . |
$$ | . . . . . . . . . . . . . . 9 . 1 . . |
$$ | . . . . . . . . . . . . . . W . 3 . . |
$$ | . . . . . . . . . . . . . . . 4 X 5 . |
$$ | . . . . . . . . . . . . . . . . . 6 . |
$$ | . . . , . . . . . , . . . . . , O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
11 @ :wc: , 12 at :bc:

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