Answers

(No. 282: Sep. 17, 2001)

Elementary level: Answer

Black 1 is crucial.
After White 2, Black gets a Ko with 3.

Elementary level: Wrong Answer

Black 1 allows White to live with White 2.

Intermediate level: Answer

Black 1 is the vital point.
If White 2, Black lives with 3 to 7.

Intermediate level: Wrong Answer

Black 1 allows White the vital point 2.
The Black stones are captured.