Xuanxuan Qijing Problem 298 / Solution

Solution

XuanxuanQijingProblem298/Solution#toc2 XuanxuanQijingProblem298/Solution#toc3 XuanxuanQijingProblem298/Solution#toc5 XuanxuanQijingProblem298/Solution#toc4
[Diagram]

Solution

After W1, the best Black can do is getting a ko with a. B2 at b , c, or d doesn't work.

Resistance 'a'

[Diagram]

Ko for life.

Resistance 'b'

[Diagram]

Black can't capture W3 W5.

Resistance 'c'

[Diagram]


Resistance 'd'

[Diagram]

Black needs both x and y.




Failure

[Diagram]

Other W1 doesn't work; Black has x or y to make two eyes.

[Diagram]

After W1 Black can tenuki.

.


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