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Invasion of third line three space extension
Path: ThreeSpaceExtensionInvasions   · Prev:   · Next: HighInvasionOfFourthLineThreeSpaceExtension
    Keywords: MiddleGame, Joseki

[Diagram]
White invasion

Icepick: The most common response I see (as a DDK) is a.



[Diagram]
Response

W2 can be on either side, depending on the rest of the context. At this point, Black can either draw back at a, or cut at b.



[Diagram]
Drawing back

Peaceful, but Black is separated

HolIgor: This variation is considered bad for Black as one of the black stones remains in a silly position.



[Diagram]
Cut or Draw Back?

White can now cut back at a or draw out at b.



[Diagram]
Cutting continued

Black sacrifices to get outside influence, while White gets some territory.

Velobici: This line of play appears to be horrible for Black. Black started with a two stone to one stone advantage. Black has sacrificed four stones. White is out to the left with a nice position. The White cut at a remains a danger for Black.

HolIgor: Acceptable. Usually B4 and B6 are not played. They are ko-threats. White's aji is not good. The roots of the problem are in the previous moves. How did it happen that Black had a hole in the middle? Why did Black choose to play on the second line instead of jumping out and starting a running fight? Everything depends on the environment. There are situations where this line of play is OK for Black. Black gets compensation in the form of outside influence.


[Diagram]
Drawing out


Path: ThreeSpaceExtensionInvasions   · Prev:   · Next: HighInvasionOfFourthLineThreeSpaceExtension
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