Hikaru Problem 5 / Solution

Sub-page of HikaruProblem5

Hikaru no Go - Problem 5 Solution

Vital point  

The vital point is a. Black lives (without ko) and White kills (in ko) if she plays there.

Vital point?  

DaveSigaty: Usually in a problem when we say White kills, we mean without resorting to ko. In this case how does White kill outright after Black 2? I must be missing something - as usual :-)

unkx80: This is a famous classical shape and if I remember correctly, the correct answer is a ko. The manga did not show any variations for this one.

jvt: Yes. I should have checked. This is indeed a very famous problem. It is problem 45 from part 3 of Gokyo Shumyo. There is a slightly different version in Xuan Xuan Qi Jing and Guanzi Pu.

See "Variation at 2" below for another possible move for Black, still leading to ko.

Solution (cont'd)  

a=10 b=11

Variation at 4  
Variation at 2  

a=10 b=11


Jasonred is dumb?  

Please correct my flawed play? I thought this might be it, but it seems not... could someone also read out the sequence for the proper solution? Thanks!

That isn't how I would read it.

Anonymous: White goes first in this problem, not Black.


8 at marked stone.


I read many things, but ultimately I couldn't kill a "smart" black, if black went first. Good job.

Hikaru Problem 5 / Solution last edited by on November 28, 2014 - 01:33
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