Noseki 2

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    Keywords: Joseki

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.


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

So what's different here?


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.

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 white+circle lightly, and build an outside position.

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Noseki 2 last edited by on March 29, 2006 - 12:57
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