Answers

(No. 258: Apr. 2, 2001)

Elementary level: Answer

Black 1 is the vital point.
If White 2, Black 3 kills White.
If White 4 at 5, Black 4 kills White.

Elementary level: Wrong Answer

Black 1 allows White the vital point 2.
White lives with the moves to 8.

Intermediate level: Answer

The combination of Black 1 and 3 is crucial.
If White 4, Black kills White with 5 to 11.
If White 4 at 6, Black 7 kills White.

Intermediate level: Wrong Answer

Black 1 is wrong. After White 2,
Black only gets a Ko with 3 and 5.