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KanazawaProblemSix

 

Kanazawa Solution Six
   

[Diagram]
Diag.: Main line

Black 1 makes miai of A and B to live.


[Diagram]
Diag.: 2 and 3 are miai

After 3, there are real eyes at the circled points.


[Diagram]
Diag.: yes they are

After 3, there are real eyes at the circled points.




[Diagram]
Diag.: Wrong (i)

The other 1-2 point is not the solution. White pushes through with 2 and plays at the vital point 4, making miai of A and B for the kill.


[Diagram]
Diag.: Wrong (ii)

The 2-2 point doesn't provide life either. White pushes at 2 and creates a situation very similar to problem 1. As in problem 1, 4 is the vital point, and White strikes it to kill Black.

Playing 2 at A is probably even a better way for white to kill.

unkx80: I believe that 2 is OK, but playing 4 at 'a' is a far better way to kill. It avoids the "bent four in the corner" by the sequence black 'a', white 'b', black 'c', white 'd' altogether.


[Diagram]
Diag.: Wrong (iii)

One would think that enlarge the eye space with 1 suffices, but it doesn't. White says There is death in the hane and plays 2. After reducing the eyespace further with 4, Black is left with a bulky five and White strikes at the vital point.

unkx80: After the hane at 2, black effectively becomes a L-Group. See The L Group Is Dead.


[Diagram]
Diag.: Wrong (iii)

Playing at 3 here doesn't help Black. This is just one variation. Note: Playing 6 at 8 would make Black play at 6 and White at A. This is a bent four in the corner shape and it's dead too, but if you can avoid that shape and kill in a simpler way, it is better to do so.



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