Bulky Seven

    Keywords: Life & Death, Shape
[Diagram]

Bulky Seven

Found in Lessons In The Fundamentals of Go written by Kageyama Toshiro.

"Even those who have heard of the bulky five have not heard of a bulky seven, but here it is, and White can kill it.

W1 strikes at the center of Black's shape, and Black is already dead. If he plays B2 at W3, he cannot do anything after White a. If White played W1 at W3, then B2 at W1, W3 at B2, Black a would mean a ko, and a white failure."

[Diagram]

Alive

Zarlan: Note that this only works because the black group isn't solidly connected.

[Diagram]

Also alive

[Diagram]

Shortage of liberties

zzled?: Note also the shortage of liberties that makes this work. If either of the white+square stones are missing, Black can capture the invading group and survive. If the white+circle stone is missing, Black can cut and break through to the outside.


[Diagram]

Bulky Seven in the corner - No outside liberties

Anonymous: 1 is the attacking move, 4 sets up the ko. (Sorry, don't have time to finish now, more later, unless someone else wants to continue the discussion)

MrTenuki: For further analysis on the bulky seven in the corner, please refer to the page Walkie Talkie Seven.

Bill: And B4 is usually wrong. Black cannot fill the ko.


This is a copy of the living page "Bulky Seven" at Sensei's Library.
(OC) 2008 the Authors, published under the OpenContent License V1.0.
[Welcome to Sensei's Library!]
StartingPoints
ReferenceSection
About