Xuanxuan Qijing Problem 9 / Solution

[Diagram]

W1 reduces the black group into one eye. However, can White make two eyes for her inside group?

[Diagram]

B2 is necessary to deny two eyes. B4 prevents seki. W7 captures the four black stones. It's a bent four, but...

[Diagram]

Surprise #1

B1 under the stones may be a surprise. Black is threatening ko by throw-in at W2 and then capture at a. White calmly prevents ko with W2. After Black capture of four stones....

[Diagram]

Surprise #2

White unleashes her own under the stones. White is alive and Black is dead.


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