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(No. 101: Mar. 30, 1998)




Elementary level: Answer

Black 1 is crucial to live.
After White 2, Black lives with 3 and 5.





Elementary level: Wrong Answer

Black 1 is wrong. After White 2, Black cannot get
an eye in the corner because of the shortage of liberties.







Intermediate level: Answer

Black 1 is the vital point.
If White 2 and 4, Black 5 kills White utilizing
its shortage of liberties.





Intermediate level: Variation

If White 4 first and then 6, Black 7 kills White.
White is still short of liberties. If White 6 at 7,
Black 6 kills White.





Intermediate level: Wrong Answer

Black 1 lets White play at the vital point 2 and
get an eye in the corner.






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