Beginner Exercise 213 / Solution

Sub-page of BeginnerExercise213
[Diagram]

Black to play.

[Diagram]

Black to play.

And a and b are miai.

[Diagram]

Black to play.

And both live.


[Diagram]

Black to play (W8 at W6)

EricBackus: I looks to me like white could get a ko this way, if she wanted to?

KarlKnechtel: No, Black is alive, though White can use the local situation for ko threats later if Black does not resolve by capturing. White will never be able to take, because whenever the black group is put into atari, it was because White took one of the kos, and thus Black is free to take the other without repeating the position. See double ko.

EricBackus: Oh, of course. I need to think harder before posting...



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