4-5 point 4-3 approach ogeima

    Keywords: Joseki

Reference diagram

[Diagram]

Ogeima

After the ogeima, white may



Variations

4-5 point 4-3 approach keima, contact at 6-3
[Diagram]

Jump

After the jump, black has two options: a and b.

a transfers to the following joseki: 4-5 point 4-3 approach keima, contact at 6-3, which will end in sente for White.

[Diagram]

Follow-up

If b, White ends in gote this way, but gets ahead on the left side.



Mistakes

[Diagram]

Elephant's eye

If B2 hane at the outside, then W3 will cut Black at the elephant's eye. White's table shape is good while Black's shape is broken.

[Diagram]

Sacrifice

Increasing the sacrifice for tempo gain, as with W5 here, is not good in this case. W9 does not get ahead as in the joseki variation, while white+circle is hurt. Black indeed still needs to capture the cutting stones (a?) but his shapes are strong so he might jump ahead to c. (Dieter: this diagram needs confirmation)


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