BQM 181

    Keywords: Problem, Question

Table of diagrams
Black to play
The answer
First variation
First variation, continued
Second variation
Second variation, continued
What should Black do?
The simple answer
Hane Yasumasa - Hashimoto Shoji 1983-10-27
Hane Yasumasa - Hashimoto Shoji (2)
Search Pattern
Alternative

From Get Strong at Attacking, problem 11:

[Diagram]
Black to play  

The text says, "White has just extended to 3. How should Black continue?"

[Diagram]
The answer  

The book gives the answer through 5. [1]

[Diagram]
First variation  
[Diagram]
First variation, continued  
[Diagram]
Second variation  

The book also gives this variation. [2]

[Diagram]
Second variation, continued  
[Diagram]
What should Black do?  

Chris Hayashida: The problem I have is that if I play a move like that, White always plays a kosumi-tsuke. How should Black answer? I assume I need to make sabaki and wreck White's moyo at the top while keeping pressure on the weak white group. But how?



Charles A play like W2 here is actually characteristic of weak players. (OK, we are mostly weak players - but ...) It really is characteristic of weak players that they play W2 routinely, with no conception that the exchange W2/B3 involves a local loss if Black simply extends as below. The loss is because B3 has more influence on the game than W2, and White hasn't fully covered the weakness (the open skirt here has turned into an invasion point?). [3] See diagonal attachment as inferior shape.

[Diagram]
The simple answer  

Joonas Tyystjarvi: B1 looks fine to me - after this, a and b are miai.

dnerra Fully agreed. You need to make sabaki when the opponent is strong. The white group at the top is weak. Btw, instead of b, Black also can jump out to c, leaving white with the problem of how to repair the horrible weakness at d.

Chris Hayashida: Funny, but B1 was what I came up with. I didn't think it was a viable option because of a white response at a (or one space to the right), though. I guess my move wasn't wrong, but my judgement was. Thanks.


[1]

Dave: Presumably this is where the problem came from...

[Diagram]
Hane Yasumasa - Hashimoto Shoji 1983-10-27  

Black plays B1, etc. before turning to the top.

[Diagram]
Hane Yasumasa - Hashimoto Shoji (2)  

YMMV...

[2]

Dave: I searched my database for the following position:

[Diagram]
Search Pattern  

In every case that I found Black played B1 when the position to the left was Black. There was not a single example of playing this when the position to the left was White. I would say use the book recommendation with caution.


[3]

Charles

A very general kind of point about this.

[Diagram]
Alternative  

In reply to black+circle, sometimes W1 is another possibility, It's a tighter plan, and can fix up your shape. Anyway, White playing at a automatically is a bad habit.


BQM 181 last edited by Dieter on July 5, 2008 - 12:48
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