Answers

(No. 257: Mar. 26, 2001)

Elementary level: Answer

Black 1 is the vital point.
And after White 2, Black 3 is crucial.
There is no way that White can live.

Elementary level: Wrong Answer

Black 1 allows White the vital point 2. White lives.

Intermediate level: Answer

The combination of Black's moves 1 and 3 is crucial.
White has to create a Ko with the moves to 8.

Intermediate level: Wrong Answer

Black 3 allows White to live with 4 and 6.