3-3 point invasion query 4

    Keywords: Joseki

Moved from sansan invasion of hoshi.

Ways to stop an invasion of the 4-4 point at the 3-3 point.

- AndrewB

[Diagram]

Diagram 1

I used the idea of responding to W1 at B2.

[Diagram]

Diagram 2

I thought this sequence turned out well for White, even though Black got a little territory.


[Diagram]

Diagram 3

This next variation is when B5 varies. I wasn't sure which move was better.

[Diagram]

Diagram 4

At this point the black stones would be captured.


[Diagram]

Diagram 5

Variation at B7.

[Diagram]

Diagram 6


[Diagram]

Black pushes, bad for White

BlueWyvern: I'd say WC is a bit of a trick play. Black simply extends with B1 and B3, then jumps to B5.



White needs to do something about the defect at a now, or Black will push here and rip White's position apart. White cannot hane early at B3 or b, or Black will cut at W2 and or W4 respectively. I'll leave it to the reader to work out the continuations with these hane's, but White has quite a desperate struggle.

[Diagram]

Black pushes and cuts

Alternately Black could try the push at B1 first with the cut of B3 which leads to a very one-sided fight in favor of Black, especially if Black has a good ladder.



Regardless of how you look at it, BC is very bad for White if Black responds in a correct manner.

HolIgor: Your move is worth consideration in the case when there surrounding is such that Black does not get an easy life when breaking into the center.


After writing all these diagrams I realized that they all hinge on the idea that White would play WC, and that Black would try to cut.

If anyone has some better ideas for responding to a black stone at the 3-3 point, I'd be interested because my only response is this:

[Diagram]

My usual response

(Play continues with White at a, Black at b ....)

SAS: W8 is wrong - White has too many cutting points. This is discussed on the 3-3 point invasion page.


This is a copy of the living page "3-3 point invasion query 4" at Sensei's Library.
(OC) 2004 the Authors, published under the OpenContent License V1.0.
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