Answers
(No. 91: Jan. 19, 1998)
Elementary level: Answer
Black 1 is the vital point. After White 2,
Black 3 is crucial to kill White.
Elementary level: Variation
If White 2, Black kills White with 3 and 5.
Elementary level: Wrong Answer 1
Black 3 allows White to get a Ko with 4.
Elementary level: Wrong Answer 2
Black 1 is wrong. White is alive with 2.
Intermediate level: Answer
Black 1 is crucial to kill White.
If White 2 at 4, Black 3 kills White.
If White 2 at 3, Black 2 kills White.
If White 2 at 5, Black 3 kills White.
Intermediate level: Wrong Answer
Black 1 allows White to get a Ko with 2 and so on.
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