6-4 point josekis

  Difficulty: Expert   Keywords: Joseki

Work in progress

[Diagram]
The 6-4 point  
  • a to c are viable ideas, d looks vulgar, e is an idea to transpose into the small avalanche.

Table of contents


A genuine joseki

[Diagram]
A real 6-4 point joseki  

White's approach W1 here gives a position that is characteristic of the 6-4 point, rather than a tenuki joseki. It is also by far the most common answer. Second most common is W1 at a: others are not really seen in professional play.

Black b next is most usual and Black c is known. Black at d or e to pincer have been played by Yamashita Keigo and others.

[Diagram]
A standard line  

This line has appeared in enough pro games to be recognisable as a joseki in the making. At B5 the choice is between a and b.

[Diagram]
Quiet  

If Black connects with B1, both players establish a position up to W4, after which Black can choose between B5, B7 and tenuki.

[Diagram]
Influence  

With B1, Black opts for influence, granting White the corner. After W6, Black can play tenuki or play honte at a, a solid but slow move.

Note: The only games in my collection where B1 is played are very old, from ~1940. This is not the case for the previous diagram, which seems to have been popular in China in the first half of the 1990s.


Joseki similar to common (tenuki) joseki

[Diagram]
Conversion  

When white enters on the 4-4 point, B3 gives a conversion to the severe 44 point double high approach.

[Diagram]
Conversion  

B3 gives a conversion to a common joseki, which can be reached through Black at B3, White at W2, Black B1. The next move is White a: see 3-4 point high approach, keima

[Diagram]
3-4 kakari  


The play at c

some lines given by kogo joseki and non-joseki database...

[Diagram]
kogos calls this joseki... looks better for black though  
[Diagram]
than this (comparison)  
[Diagram]
but only this happens in pro games  

e.g. kitani minoru vs sekiyama riichi 1935-02-01


Not joseki

[Diagram]
Not joseki part 1  
[Diagram]
Not joseki part 2  

The 8 points white gets in gote is worth far less than the influence black gets.

tapir: btw. eidogo (i don't have access to some bigger database right now) has a game between choi cheolhan and lee seongjae featuring B1 at 6-4, W2 5-3 but then black attaches on the second line :)


Attachment at e

[Diagram]
The 6-4 point  

This way, it reverts to the small avalanche joseki.


emeraldemon: Gan Siyang Seems never to play this way, prefering (no surprise) to go for influence:

[Diagram]
Recent pro play  

See [ext] http://www.go4go.net/go/games/sgfview/41645 [ext] http://www.go4go.net/go/games/sgfview/41718


6-4 point josekis last edited by Slarty on July 23, 2014 - 18:55
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