OD1P - July 31 Problem / Discussion

Sub-page of OD1PJuly31Problem
[Diagram]

Only a ko

jvt: Black 1 looks good but it is only a ko.

[Diagram]

If White 2 elsewhere...

Black 3 occupies the important point and kills.

[Diagram]

Continued

If White captures at 8, Black creates a false eye at 9.

[Diagram]

Variation

White stones get captured in snapback on the left.


[Diagram]

Black's next move?

[Diagram]

Continued 1: (ko)

6 at 2.

[Diagram]

Continued 2: (Black 1 kills)

jvt: White can't get a ko like this.

[Diagram]

Mr.jvt:Why don't B 2?

[Diagram]

Answer

DieterVerhofstadt (1k): White will eventually have to play at a and capture at b. Her eye space then consists of three in a row. That's a dead shape, since Black can throw in again at 1. --(exchanged b/w RogerHale?)


kind: for some reason i just can't believe white is killed. Looks more like a ko to me when black goes 1.

not sure though correct me if i am wrong

[Diagram]

hmm how bout

now it is ko.

if black do something else

[Diagram]

hmm how bout

alive

[Diagram]

hmm how bout

same ko

[Diagram]

hmm how bout

or

[Diagram]

hmm how bout

so it seems like ko to me if black go 1 to begin with ?_?


This is a copy of the living page "OD1P - July 31 Problem / Discussion" at Sensei's Library.
(OC) 2012 the Authors, published under the OpenContent License V1.0.
[Welcome to Sensei's Library!]
StartingPoints
ReferenceSection
About