Three star points, contact invasion
Q: Jion: Hello, don't know where I should ask this or find this; I tried searching for it but found nothing. Please edit/move this if it makes things easier. Just wondering if it is always possible to live with an invasion at a in this situation? I realize that invading immediately would probably be helping Black, but can anyone give me some ideas for a joseki sequence? Thanks in advance.
Note: The three stars (star points, hoshi) formation is the major example of san-ren-sei.
Dieter: (copied the above from QuickQuestions)
Notice that this is also a standard method for approaching a hoshi stone with a 4473Enclosure where
is a little more cramped by the presence of
.
Charles: There are good reasons why this is 'rare': no joseki.
Probably the most interesting way for White is this. Of course there is a ladder to consider now. This might be played in a high-handicap game.
RhysD: Would somebody mind adding some detail here? I've had a play around, but can't find a plausible ladder. I find these sort of positions (e.g. instances of double hane) quite difficult.
![[Diagram]](../../diagrams/47/cba3ef20abb252dd837cb4ad9030489d.png)
A little heavy
If instead
and
, White's group is somewhat heavy. Black can expect to make territory, in the left corner by attacking, and on the right.
![[Diagram]](../../diagrams/12/04f77857091af59016e22e01efa5d502.png)
![[Diagram]](../../diagrams/19/d43ff429891a83854497563388d4f5b1.png)
![[Diagram]](../../diagrams/24/dbc1865f9648b7ee807da394b130cb39.png)
![[Diagram]](../../diagrams/1/80bd1518abcd41f7744e4f08c857cdf4.png)
![[Diagram]](../../diagrams/4/1cfc90927f6b29b968eb7d37686ec109.png)
![[Diagram]](../../diagrams/36/e5fe8173d71a90fd3dab6bb401483d41.png)
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