3-4 point low approach two-space high pincer hazama tobi/Evaluation with KataGo

Table of contents Table of diagrams
Main Line
Variation 1
Variation 2
Variation 3
Kajiwara's line
Kajiwara continued
Main line
Main line
Main line ctd
Variation
Main Line
Main Line
Main Line

Attachment

Wedge

[Diagram]

Main Line

This is KataGo's main line for the attachment B1. After the wedge, B5 emphasizes the corner and W6 leaves White with sente

[Diagram]

Variation 1

Locally, Black will defend with a hanging connection at a or make an extension with b.

[Diagram]

Variation 2

W2 can push through like this.

[Diagram]

Variation 3

Black can capture three stones but the marked stone is blighted

There are many more variations on the wedge but we need to address the one by Kajiwara:

[Diagram]

Kajiwara's line

[Diagram]

Kajiwara continued

This is main line as presented on the parent page, invented or articulated by Kajiwara Takeo. KataGo doesn't like it for White, giving away a big corner for influence but not strength.



Hane

[Diagram]

Main line

Unless the top right is yet undisputed, in which case Black may be more adventurous, Black will play lightly here with B7 and take up a position at the top left.



= Wedge into the elephant's eye

[Diagram]

Main line

[Diagram]

Main line ctd

Both capture 2 stones but again Black has a blighted pincer stone.

[Diagram]

Variation

White grabs the corner but there's quite a lot of aji.



= Katago's preferences

Kick

[Diagram]

Main Line

B1 emphasizes the corner. This variation can be attractive to White if there is influence on the left side to cooperate with.

Extend

[Diagram]

Main Line

If Blacj has influence at the top to cooperate with, he might extend up against the press. If W2, Black can reinforce the corner and then the stones go walking



Keima

[Diagram]

Main Line

A first choice is to jump here and both can treat the situation lightly, with a becoming urgent soon.


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