Xuanxuan Qijing Problem 71 / Solution

[Diagram]

Modified version Solution:ko

(The original has no marked stones and intends to be a kill problem with the diagram sequence. But it involves outside complications)

[Diagram]

Continued

[Diagram]

Failure, B9 at W6

[Diagram]

Continued


[Diagram]

Alternative Solution: simpler ko

In fact, B1 here leads to ko without outside complications. W2 is the only defense to prevent escape because....

[Diagram]

Variation

...W2 block is defeated by B3! and B5! This means the modification is not fully satisfactory.


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