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44PointLargeLowEn...

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EnclosureTechniques

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Snapback
NetExample5
44PointVeryLowApp...
4463Enclosure
44PointEnclosureV...
44PointEnclosureJ...
EnclosureJoseki
TheNineStandardEn...

 

4473 Enclosure
Path: EnclosureTechniques   · Prev: 4464Enclosure   · Next: 4474Enclosure
    Keywords: Opening, MiddleGame, Joseki

[Diagram]
4473 enclosure

This is a common way to develop a 4-4 point in the corner.


[Diagram]
The 3-3 invasion

This is the main variation of White's 3-3 invasion of the enclosure. B4 may also be played at W7 (see below).


[Diagram]
Main variation, continued



This is the standard line, and White ends in sente. The White group is an L+2-group and is alive. Black though has considerable influence now.

Variants:

  1. W1 at a, challenging to a ko.
  2. W3 at b. This affects forcing moves (Black d is then sente against the corner), and endgame plays in the corner. With W3 as played, Black c threatens a ko in the corner.
  3. Black on occasion omits B4 net example 5, but then White at B4 causes a fight.

[Diagram]
Another way

Black may also play B1 this way. Then W2 (or a) lives. B7 here is proper, but may be omitted: if Black wants to end in sente here it may make sense to play B1 in this manner, rather than follow the above main variation.



Dieter: Question. B8 at a reduces the corner to an L+1-group, whose status depends on sente. So Black can play a in sente ?

[Diagram]
Kikashi

Here B1 is certainly a good kikashi against the corner. And B3 here is a useful way to follow it up, for fighting purposes, since it still threatens the corner. It is unlikely to be the correct endgame play, though, in typical situations.



Chtito: I have a question about an approaching sequence that I don't understand:

[Diagram]
Corner Sequence

After B5, the sequence White a, Black b is played. Now my question is: why White does not play b instead of a? How would Black punish a white play at b?


[Diagram]
Can White play this?

Charles Well, if B1 and W2 it becomes very dangerous for White. After B5 can White cut at the marked point? I don't believe so. In any case White was strong here first, so that White shouldn't have to fight in such a desperate way: it should be Black's problem to find good moves, and here it is White's.

W2 at B3 is quite bad, while W2 at W4 is possible but not really interesting.



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