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KanazawaProblem22

 

Kanazawa Problem 22 / Solution
Sub-page of KanazawaProblem22

[Diagram]
The comb formation

Black 1 makes a comb formation, which is alive. Now a and b are miai.


Variations

[Diagram]
Main line

After 2 and 3, it becomes obvious that a and b are miai.


[Diagram]
Variation

After 2 and 3, it becomes obvious that a and b are miai.



Failures

[Diagram]
Wrong 1

Black 1 seems a shapeful move, but actually it creates a bulky five. White 2 strikes at the vital point.



[Diagram]
Wrong 2

Black 1 invites White to create a ko with 2. Later ...


[Diagram]
Later

... when Black recaptures the ko, W2 is an internal ko threat. Black must play B3 and White can recapture. Therefor, in the previous diagram W4 is better than a.



[Diagram]
Wrong 3

Black 1 takes another seemingly vital point, but this diagram is rather a silly way to die.



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This is a copy of the living page "Kanazawa Problem 22 / Solution" at Sensei's Library.
(OC) 2004 the Authors, published under the OpenContent License V1.0.