Answers

(No. 268: June 11, 2001)

Elementary level: Answer

Black 1 is the vital point.
If White 2, Black wins with 3.

Elementary level: Answer (Variation)

If White 2, Black wins with 3.

Intermediate level: Answer

Black 1 is the vital point.
If White 2, Black 3 is crucial to kill White.

Intermediate level: Answer (Variation)

If White 2, Black plays 3 to 7. White dies.

Intermediate level: Wrong Answer

Black 1 allows White the vital point 2. White is alive.