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.

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 :)


This is a copy of the living page "6-4 point josekis" at Sensei's Library.
(OC) 2014 the Authors, published under the OpenContent License V1.0.
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