Noseki 2

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    Keywords: Joseki
[Diagram]

Noseki

Here W4 is not joseki. It is more normal to invade at a or make a double approach at b. The ikken tobi at c starts the possibly deprecated Catenaccio Joseki.

[Diagram]

Joseki

This mistake is probably caused by the vague memory of a simliar 3-4 joseki.

So what's different here?

[Diagram]

Noseki

White may play W4 in the first diagram expecting Black to make a two-point extension B5 here; as in a typical continuation of the 3-4 point joseki.



However, Black probably wouldn't do that, because the two-point extension on the fourth line doesn't have the same meaning as it would in the 3-4 point joseki - it doesn't secure territory. Black may instead choose to seal white in with a.

[Diagram]

Moves 20 to 28

The only game I could find with this jump was this one, played by Pak Seung-hyeon as White against Yi-Setol in the 2001 Baduk TV Cup.



Here the idea of the jump seems to be to treat WC lightly, and build an outside position.


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This is a copy of the living page "Noseki 2" at Sensei's Library.
(OC) 2007 the Authors, published under the OpenContent License V1.0.
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