Xuanxuan Qijing Problem 333 / Solution

Solution

[Diagram]

Solution

W1 kills.

After W1, both eyes at around x and y are gote eyes;

White will be able to destroy one of them.

Eye 'x'

[Diagram]

(W2 at around y)

White can destroy the eye around here.

[Diagram]

(W5 at W3)

B4 is to prevent snapback.

Black can't make this eye in sente.

If B2 is at r, W3 is at B2.

Eye 'y'

[Diagram]

(B2 at around x)

White can destroy this eye.

[Diagram]

Black can't make this eye in sente.




Failure

[Diagram]

Two eyes (around x and y).

[Diagram]

The black group has another eye at around x or y.

[Diagram]

Two eyes (around x and y).

[Diagram]

W1 or W1 at r are moves to help one's opponent.


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