3-4 point high approach, two-space high pincer, bump
noseki? ladders are good for white. can white play this way if she wants to keep black low on the left side?
tderz: There are actually some examples (5 on gobase) in Go history when Black is one more to the left (c).
Black has basically two choices: a & b.
tderz: has to be answered by (not true, there is also a game where White jumps to a), vice versa .
After , White has the normal techniques hanging conection b and the double-hane c as alternative continuations.
Both end in (very local) sente for White.
tderz: this could be considered a natural continuation for both.
What will be White's next move?
tderz: After , Black defends at and White can counter-pincer at .
Actually I did not find any professional games with in this position, only if is at a ( is then at c).
tderz: If Black does not defends at above, then
here is tesuji.
Inoue Ichiro - Kitani Minoru (09.11.1927)
Event Oteai,1974,Japan, Black Ishii Kunio, 8p White Yoshida Yoichi, 7p Komi 0 Date 1974-04-18 Place Japan Result W+R
The next moves were White a and Black b!
tderz: If Black pushes through with and cuts at ,
then White can get some grip on , because she is assured of an atari a. Hence white could extend with to or so.
Often black a, white b is exchanged.
tderz: Sometimes, White also starts like this, because she knows about black's weakness around a,b.
tderz: Black is too far away from the white mini-wall to be efficiently controlled by .
Also is too far away from white allies that the whole procedure would work.
Hence, my conclusion is:
If Black made the two-space-high-pincer, the bump is not advisable.
Alex: I agree with your conclusion. How is this tewari, though? I thought tewari meant analysis by either changing the order of moves or removing superflous pairs (one White, one Black) of stones, neither of which you've done here.
Andy Pierce: follow-up question: if the bump is not advisable, but white really wants to keep black low on the left side as shown, is there a better alternative than the bump, or does white just accept that this achieves her goal, at a local loss?
tderz to Andy: as Rich says, if you simply jump, you keep black low (if that is your aim). Also the one-point-jump will do. Of course, Black could also jump to j, that's another story.
After e.g. -, White could exchange a for b, then counter pincer at c .
tderz: After -, White could slide to a.
It is important only to exchange for , as white-m - black-n would be aji-keshi.
If Black ever peeps at p, then white can connect nicely with q-r-s and Black seems wanting to cut a bamboo (bad shape).
Furthermore, if Black ever cuts some stones off from the center, White still has a sabaki-aji for making life in the corner with White double-hane n.
Here is the game record in question:
Andy Pierce: I played thinking to press black low on the bottom side since and are both low. When black played the two-space high pincer my thinking was that I can't really play the one point jump due to , but maybe the lighter two point jump would have been ok. On the other hand I could have approached at a before to see how black responds first.