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(No. 226: Aug. 21, 2000)



Elementary level: Answer

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

Elementary level:Answer



Elementary level: Answer (Variation)

If White 2, Black lives with 3 to 9.

Elementary level: Wrong Answer (Variation)



Elementary level: Wrong Answer

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

Elementary level: Wrong Answer



Intermediate level: Answer

Black 1 to 3 is crucial to make
White short of liberties.
After Black 7, Black has no way to live.

Elementary level: Answer



Intermediate level: Answer (Variation)

If White 2, Black plays 3 to 7.
White cannot live because of
its shortage of liberties.

Elementary level: Answer (Variation)



Intermediate level: Wrong Answer

Black 1 allows White to live with 2 to 4.

Intermediate level: Wrong Answer




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