BQM 412

    Keywords: Question

MrTenuki (KGS 3k): This position occasionally occurs in my games when I'm playing as White.

A variation of the Shusaku Kosumi  

When I play W4, I did so with the knowledge that Black might choose to play B5 at a instead. Normally, though, that doesn't happen. While I always thought that the B7-W8-B9 exchange is normally saved for oyose, sometimes Black would choose to play B5 at B7 immediately:


Basic instinct says play W6 as shown. But isn't this bad for White, at least according to the following tewari?

xela: I don't understand tewari yet, but I think this diagram is a common position from professional games; nothing wrong with playing this way.

Herman Hiddema: In pro play, W6 is by far the most common response in this position. After that, black will usually extend along the left (a or b), followed by a white extension along the top (c, d, e). Black may choose to pincer instead, but white's stones are reasonably strong in this position, so there is no real need for worry. If you feel uncomfortable with this position generally, you can consider playing W4 elsewhere.

Bill: Well, I did a GoBase search, and it seems that the tachi and the tenuki are pretty well neck and neck. On occasion you will see the sagari.

I remember being surprised at the tachi, too, because it was so close to the keima. But then I began to understand the weaknesses in the opponent's position, and the strength of the ponnuki shape he can make if you don't play the tachi. But it's far from an automatic play. :)


This would be a transposition to a position similar to a Kitani joseki, except that W6 is not played around a. So White is overconcentrated relative to the "joseki."

So, what can White do here besides NOT playing the keima response in the first place? I considered tenuki, but is that really an option here?

Herman Hiddema: White is perhaps a bit overconcentrated, but also stronger. W6 gives white more scope to attack the corner later, and also allows white to take more territory at the top, because white can now extend further than a.

Is this playable for White? (W6 = Tenuki)  

xela: Maybe W6 at a (and then black probably won't play B7)?

BQM 412 last edited by Dieter on July 5, 2008 - 12:49
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