BQM 259

    Keywords: Opening, Question

Next Big Move in the Opening Question

Table of contents Table of diagrams
Where should Black play next
3 Kyu Instinct
14 Kyu Instinct
Where should Black play next
Where should Black play next
5k version
5k version
Where should Black play next
Where should Black play next
Black is heavy
will white play along?
Where Black should play next
Where should Black play next, White option A
Where should Black play next, White option B
Diagonal attachment
Lee-Lee
Rin Kaiho - Ishida Yoshio 1979-02-01
Rin Kaiho - Ishida Yoshio 1979-02-01 (cont'd)
Takemiya Masaki - Ishida Yoshio 1974-05-22

Problem Diagram

[Diagram]
Where should Black play next  

The question is "Where should Black play next?".

For this question, let's set aside issues regarding B9.

dnerra: I think others have more or less said this, but I think it is worth saying it again: B9 is an exchange, building up influence at the cost of giving White territory. You do not play such a move unless you have a plan what to do with this influence. Territory is always better than influence-without-a-goal.



Sensei's Library Members Recommendations

[Diagram]
3 Kyu Instinct  

Ian As a 3kyu I am in 2 minds, do I play a to push 6 towards thickness, or b (maybe even c) to develop the shimari. I would have rejected something around the area of d as being unecessary.

[Diagram]
14 Kyu Instinct  

isshoni: I was pretty happy to see that my 14k instinct told me the same thing than a 3k's!
I didn't consider c, though: at this stage, whatever White's reply is, it will most probably end up stabilizing W8, and that will hurt B7 and B9 more than I can afford (as a 14k...).


White can't really tenuki Black a but will have more freedom to answer Black b. So to keep real sente, I'd play a, and then decide whether to play b or support directly B7 - B9. Because I'm not comfortable with them, I'd settle for a couple of press plays starting with e in order to build influence on the top that would work well with a, given that the top side is wasted for Black anyway, and then I'd slide at g to stabilize my group.
Whatever follows with W2 and W8, on the left or down sides, I'll have no weak group and will be able to try to handle/deflect White's next action plan.


But in the process, I made lots of assumptions concerning White's plays, OC..And also I didn't set aside B9 issues...


But to sum it up and answer the original question, my next move would be a. And if White were to ignore it and develop W2 on both sides instead, i'd scratch my head and think again!

[Diagram]
Where should Black play next  

Dieter: I see two areas of interest: the upper right side, where a lone White stone can be challenged and the lower left side, where White's wide connection can be broken. Black must keep up the pressure on White and use his initiative.

So, in the upper right I'll choose a, because it applies more pressure than one point above, and also because the extension from the corner is even, hence not leaving an obvious invasion point.[1]

In the lower left I'll choose b, also for reasons of keeping up the pressure. However, there is an obvious answer for White, combining a pincer with an extension. So I'd concentrate on the right side first, treating the left somewhat lightly.

Ian: The consensus tends towards a so far - I wonder do you feel that because the marked White stone is also her weakest point, that this should serve to reinforce the decision to play a.

[Diagram]
Where should Black play next  

However, the double approach may give a good result for Black. White looks overconcentrated and Black is light on the left side.

[Diagram]
5k version  

Andy Pierce: Black needs to engineer an attack on white+circle since he gave white territory on the top, so black can't start with B3 because white settles too easily with a (as Dieter mentioned). It is too early for black to go into the UL corner. White's asymmetric wedge on the right makes playing there unattractive. Black's extension to B7 is too loose to end in sente, so I'd play on the left first.

zinger: If black is going to play a pincer such as B1 anyway, is it better to lean on white first with b and perhaps c ?

[Diagram]
5k version  

Dieter: Good idea. Remark: don't you think White will answer at W2? I'm not sure how this works out tactically but my feeling is that the two space extension is too thin to engineer an attack.

Velobici: This broaches the issue of Black's two-space jump, B9 in the first diagram. This is a mistake by Black. The two space should only be used when Black can launch an attack on the White three space low pincer stone, W8 in the first diagram. That attack is not possible here due to the White stone in the lower left corner. See Yang Yilun's Whole Board Thinking in Joseki Volume One, Three Space Low Pincer section.

[Diagram]
Where should Black play next  

My double approach can be improved for White, too. (B11 at a).


[Diagram]
Where should Black play next  

Bill: The querent asks us to set aside issues regarding B1. Well, OK, but what was the point of B1? Surely W2 is not unexpected. What's the plan?

This is a calm opening. One thought is to take the last big play in the opening. That would be on the bottom. Black starts with B3, followed by B5. Note that he does this before W8, or W9 is a good play.

Another thought is to jump into the middle game with, say, an approach at a. But white+circle is a bit far from W4, so White is not settled there, anyway. Besides, that is not consistent with B1, is it?

(BTW, I agree that B1 is questionable. See /Earlier Play)



Charles Yes, it is more interesting if one is allowed to look at B1. One thing it does is to leave behind a play at b. Another is to make Black more rather than less interested in counter-pincer on the left side.

Bob McGuigan: Some attention should be paid to the two black stones in the upper left because White can make the group heavy as shown in the following diagram. This makes me reluctant to pincer on the left side. Before this Black can settle his group (in gote) by attaching at a (not sliding to b). I think I'd like to press on the two white stones in the upper left (b in Charles's comment), hoping to strengthen the two black stones and make it more attractive to pincer on the left.

[Diagram]
Black is heavy  

zinger: This is why I think Black should play B3 himself, before the pincer.

Charles Given a black 4-4 stone lower left, rather than a white one, it is easier to see Black strengthening himself upper left and then attacking on the side. The two-point jump out can also be a light play. If so, here, Black plays it to deal rapidly with the area and move elsewhere. That's not out of the question; but as Bob points out, Black can quickly get a heavy group here. It is true that Black has some forcing plays here. Black really needs a light position, or a settled position, or some sort of attacking position. Forcing once may not solve the essential difficulty.

[Diagram]
will white play along?  

zinger: Actually I was thinking of forcing more than once, but I'm not sure white would be so cooperative as in this diagram.



Charles Actually it tends to be considered more cool to omit B1/W2 (keeps 3-3 options open). But I've now looked at what the pros do. Mostly on a side like the left side here they come in immediately at c. That is, try to get an immediate use of the two-point jump, but leave out the forcing plays for the moment.


Answer from Professional Review of Game

[Diagram]
Where Black should play next  

Velobici: When reviewing the game, the professional's comment was that Black should have played at B1. White has two responses: a and b

[Diagram]
Where should Black play next, White option A  

Velobici: Professional comment: Black makes a position. White is floating.

[Diagram]
Where should Black play next, White option B  

Velobici: Professional comment: Black has gained locally.



Charles Very interesting that White's diagonal attachment is below the threshold of professional attention.

[Diagram]
Diagonal attachment  

Dieter: (this is what Charles means, I think)

[Diagram]
Lee-Lee  

I've seen this played by Lee Chang Ho against Lee Se Dol. I guess global considerations apply. (always) --Dieter

[Diagram]
Rin Kaiho - Ishida Yoshio 1979-02-01  

The White stone on the right is not in the original position --Dave

[Diagram]
Rin Kaiho - Ishida Yoshio 1979-02-01 (cont'd)  
[Diagram]
Takemiya Masaki - Ishida Yoshio 1974-05-22  

Here also the stone on the right is different --Dave


/Earlier Play


[1]

Bill; Lockett's Law, hehe.


BQM 259 last edited by Dieter on July 28, 2007 - 11:04
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