XuanxuanQijingProblem57/Attempts

Attempt 1

[Diagram]

B1 looks to be key

[Diagram]

Ko

[Diagram]

If white 4 from above variation plays here, there is no ko.

[Diagram]

If w connect, black kill 5 stones



Attempt 2

[Diagram]

How about this for ko.

[Diagram]

OK, my previous attempt was wrong. Continuing after black 9.

[Diagram]

White group is safe.



Attempt 3

[Diagram]

Black gets either a or b for the ko.

[Diagram]

If white 4 answers here..

[Diagram]

Again, ko.

[Diagram]

If white 4 makes the first eye here..

[Diagram]

Black gets either a or b to kill the white group.


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