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KanazawaSolution46

 

Kanazawa Variations 46
    Keywords: Problem

Authors: DieterVerhofstadt, unkx80

This is a failure diagram from KanazawaProblem46


[Diagram]
Suggestion

I would like to ask, why doesn't Black simply play at B2 instead? Seems dead to me, but now it is 1 am Singapore time, and I might be wrong...

--unkx80

I don't know why I missed this one. At the time I started this page, I was or should have been clearly awake #:-7

--Dieter



[Diagram]
Failure

Now, how about the strongest responses for both?


[Diagram]
Approach ko

This results in an approach ko. If B10 fills a liberty at a, then White at B10 makes seki.

What happens if Black plays B4 at W5 in this diagram ?


[Diagram]
Better for Black?

This is another approach ko, but now Black takes first, and his loss is smaller if he loses the ko, so this is probably better. (please correct, unkx80, my previous contribution was terrible).


[Diagram]
Less strong play

If W6 here, then Black can cause an almost fill with a farmer's hat at the marked points and White is dead.


[Diagram]
White lives

However, White plays diagonal attachment at W2 and Black has to play B3 to prevent two eyes. Now White throws in at W4 ...


[Diagram]
White lives

... and she has enough outside liberties to fill in the inside liberty, putting Black in shortage of liberties.



This is a copy of the living page "Kanazawa Variations 46" at Sensei's Library.
(OC) 2003 the Authors, published under the OpenContent License V1.0.