Answers

(No. 156: Apr. 19, 1999)

Elementary level: Answer

Black 1 utilizes White's shortage of liberties.
White cannot live.

Elementary level: Variation

If White 2, Black kills White with 3 and 5.

Elementary level: Wrong Answer

Black 1 is wrong. White lives with 2 and 4.

Intermediate level: Answer

Black 1 is the vital point.
After White 2, Black 3 kills White.

Intermediate level: Wrong Answer

Black 1 is wrong. White lives with 2 and 4.
If Black 3 at 4, White lives with 3.