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3-4, One-Space High Approach, Two-Space High Pincer, Ogeima
   

[Diagram]
Diag.: Ogeima

This is the major variation. White 1 here was invented by Fujisawa Kuranosuke.


[Diagram]
Diag.: Main line

Black 6 here is now almost always played. The continuation with White 7 at a gives Black too much in the way of outside influence.

There is also Kajiwara's variation with Black 2 at 4.


[Diagram]
Diag.: Main line (continued)

The normal moves are as shown here, completing the joseki. For a while the relative timing of the 1/2 and 3/4 exchanges was considered a critical issue, but (it seems) no longer. Black 2 at b is a variant which is stronger in the corner. The exchange 3/4 is a loss for White, but means that White 5 indirectly covers the cutting point to the left. If White 5 is at c instead, Black can cut there for a difficult variation often involving ladder-breakers.


[Diagram]
Diag.: Variation

This variation is played in 52 pro games on gobase (nov 2002). The first time it appeared in a game between Miyazawa Goro and Ishikura Noboru. The latter can thus be considered to have invented the variation ?


[Diagram]
Diag.: Variation (continued)

As far as I understand, there are two issues in this joseki:

  • Will Black be able to make up for the local loss by playing effective ladder breakers for the ladder at a (which obviously works for white, else she wouldn't play 1 in the previous diagram)?
  • Will Black be able to close off with b and cooperate well with the upper left ?

--Dieter



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