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BeginnerExercise88

 

Beginner Exercise 88 Solution
   

[Diagram]
Diag.: Black first to live

KarlKnechtel: This is the best I can do right now... Black already has one eye, and the only plausible way to make a second is by capturing. Black 1 is a natural way to start - anything other than White 2 allows Black 2 at to to capture something and make the eye.


[Diagram]
Diag.: Black first to live

Black 3 is double atari, and connecting still leaves White in atari. So White elects to save the larger group of stones here.


[Diagram]
Diag.: Black first to live

Black 5 plays atari again, starting a ko. If White chooses to connect instead (at 6), Black 7 puts the pressure back on.



Nando: Good try, but there's a better way to get life (without ko)

[Diagram]
Diag.: Black first to live

Black 1 is the key. White has no choice but to connect at 2. Then, Black 3 gets the second eye because of the cutting point at a.


[Diagram]
Diag.: White can't destroy the eye

With the sequence up to 9, Black captures White's group.


[Diagram]
Diag.: alive

So, White must connect and Black then ensures life.





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