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(No. 211: May 8, 2000)



Elementary level: Answer

Black 1 to 3 is crucial. If White 4,
Black kills White with 5 to 7.
If White 2 at 4, Black 5, White 6, Black 7.
White dies.

Elementary level:Answer



Elementary level: Wrong Answer 1

Black 1 to 3 is wrong. White lives with 4.

Elementary level: Wrong Answer1



Elementary level: Wrong Answer 2

Black 1 first allows White to live with 2 to 6.

Elementary level: Wrong Answer2



Intermediate level: Answer

Black 1 is the vital point.
If White 2, Black lives with 3 to 5.

Intermediate level: Answer



Intermediate level: Variation

If White 2, Black lives with 3 to 5.

Intermediate level: Variation



Intermediate level: Wrong Answer

Black 1 allows White the vital point 2.
There is no way for Black to live.

Intermediate level: Wrong Answer




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