[Welcome to Sensei's Library!]

StartingPoints
ReferenceSection
About


Referenced by
KanazawaProblem31

 

Kanazawa Solution 31
   

[Diagram]
Diag.: White lives

White 1 makes an eye at A and makes miai of B and C for the second eye. It is clearly the VitalPoint.



[Diagram]
Diag.: Wrong 1

White 1, 3, 5, 7 and 9 all serve the same purpose: enlarging the EyeSpace, which is generally a good idea. Black occupies the VitalPoint at 2 and prevents White from making 2 eyes. I seems as if we are heading for a seki (see next diagram) ...


[Diagram]
Diag.: Wrong 1 (continuation)

If White plays 1, then after all the circled liberties are filled, Black can give atari at A, White protects at B, and her eyespace is AlmostFilled with a FarmersHat.

If White plays at A herself instead of 1, eventually her eyespace will be AlmostFilled with a bent three.

So, White is dead either way.



[Diagram]
Diag.: Wrong 2

White 1 makes an eye where there is already one. It is not vital. Black can now kill by playing either of 2, 3 or 4. Any of those three moves makes miai of the other two to kill White.

Choice 2 is shown. After 8, A and B are miai to keep White at 1 eye. Remark: once again, without the CuttingPoint at C, there would be the possibility of seki.



Problem 32
Back to KanazawaTesujiSeries



This is a copy of the living page "Kanazawa Solution 31" at Sensei's Library.
(C) the Authors, published under the OpenContent License V1.0.