Xuanxuan Qijing Problem 266 / Solution

Solution

[Diagram]

Solution

Black gets a ko after B1.

[Diagram]

Cont. 1

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Cont. 2

[Diagram]

Cont. 3

B5 is the important good move in this problem.

If B5 is at W6, Black will lose the capturing race.

[Diagram]

Cont. 4

Finally, B9 captures and starts the two-stage ko.




Failure

[Diagram]

For B1 at any other place, White's corner is alive after W2.


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