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(No. 200: Feb. 21, 2000)



Elementary level: Answer

Black 1 is the vital point to win the capturing race.
White dies.

Elementary level:Answer



Elementary level: Wrong Answer

Black 1 allows White to get a Ko with 2.

Elementary level: Wrong Answer



Intermediate level: Answer

Black 1 is the vital point.
If White 2, Black plays 3. White has no way to live.
If White 2 at 6, Black 4 kills White.

Intermediate level: Answer



Intermediate level: Wrong Answer

Black 1 allows White to get a Ko with 2 to 4.

Intermediate level: Wrong Answer




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