Hanging connection

  Difficulty: Introductory   Keywords: Shape, Go term

Chinese: 虎接(hǔ jiē)
Japanese: 掛け継ぎ, カケツギ (kaketsugi)
Korean: -

Table of contents Table of diagrams
Connection
Solid connection
Blocking along the side
Double hanging connection
Avoid two peeps
A raw peep

The hanging connection is an application of the tiger's mouth shape and serves at least two distinct purposes: an indirect way of defending a cutting point, and a way of blocking inroads to a certain part of the board.

Defending a Cutting Point

[Diagram]
Connection  

Black has a cutting point at a. Playing B1 defends it, making a hanging connection.

[Diagram]
Solid connection  

A solid connection in this case creates an empty triangle and is less efficient. White can more easily play a later.


Blocking inroads

[Diagram]
Blocking along the side  

If White advances with W1, then the hanging connection of black+circle backs up B2 to block off the upper side. As a minor setback, this allows White to play a forcing move, with the peep at a. Also, White will likely get to make the sente endgame hane one point above B2.

Bill: In fact, B2 may be better at a.



Double hanging connection

[Diagram]
Double hanging connection  

In this case B1 covers two cutting points. See trumpet connection. However, this allows for two forcing moves, at a and b:


[Diagram]
Avoid two peeps  

Because a double hanging connection allows two peeps, it should often be avoided. Here B1, or a, might be better.


[Diagram]
A raw peep  

Incidentally this case W1 may be criticized as a raw peep: a peep at a cutting point that still might be useful as a cut (depending on the ladder).

Bill: Also, B2 is hardly forced.



Endgame impact

[Diagram]
 

It should be noted that the hanging connection changes the endgame hane-connect W1 from sente (if black+circle at a instead, then Black must play b) in gote.

See also


Hanging connection last edited by 24.60.141.8 on May 30, 2018 - 22:45
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