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July31Problem
July31Failure

 

July 31 Discussion
    Keywords: Problem

[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?)



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(OC) 2003 the Authors, published under the OpenContent License V1.0.