3-3 point invasion query 9
This 2005-07 discussion has been largely rendered obsolete by advancements in 3-3 theory made since the AI revolution of 2016-17.
is now a very common joseki move, discussed in more detail at 4-4 Point, 3-3 Invasion, Jumping Away.
Hans: A few days ago I saw this sequence appearing in a game: Is this hamete or just another joseki move which is uncommon?
tderz: It is a method for Black to get sente.
[1] Important is the stretch
. If
crawls, Black does not have to respond immedeately locally and gets global sente.
The cutting point at c is protected, because Black has also more liberties (around d).
The more "usual"(?) variation on the right ends in gote after white a, Black b.
I just see that unkx added already a continuation,
however,
in [2] could be at
here in [1].
Of course, Black could also wait (as in Zhang Wendong vs. Zhou Heyang 1992-09-14) and decide later whether to hane at
or nobi
.
Having checked gobase, I get the impression, that the continuation following my reasoning is played least often.
White playing d himself, with Black replying at e occurs often, as does the simple (?) Black f for
(=unkx80's variation below).
My summary could be: if White crawls with
– take sente.
![[Diagram]](../../diagrams/39/ce02c5d4b848c26145a1c4f12d2bc6a5.png)
![[Diagram]](../../diagrams/43/659d024fe54b006d36637c4a00aee1e5.png)
![[Diagram]](../../diagrams/24/a64aa339a525846e3dc29cf529354a40.png)
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