IgoHatsuyoRonProblem97/Solution

[Diagram]

White to play

W5 at a leads to a similar ko.

[Diagram]

Continued: Ko

Now the situation is clear; White is threatening a flower six by connecting at a and no seki is possible because b and c are miai. Black must fight the ko.

[Diagram]

Failure

W1 capture is too careless.


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