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(No. 223: July 31, 2000)



Elementary level: Answer

Black 1 is crucial.
If White 2, Black 3 to 5 kills White.

Elementary level:Answer



Elementary level: Wrong Answer

Black 1 lets White live with 2.

Elementary level: Wrong Answer



Intermediate level: Answer

Black 1 is crucial.
If White 2, Black lives with 3.
If White 4, Black 5 to 9 captures
the three White stones and lives.
If White 2 at 3, Black lives with 2.

Elementary level: Answer



Intermediate level: Wrong Answer

Black 1 is wrong.
After White 2, Black is dead.

Intermediate level: Wrong Answer




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