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(No. 160: May 17, 1999)



Elementary level: Answer

Black 1 is the vital point to win the race.

Elementary level: Answer



Elementary level: Wrong Answer 1

Black 1 is wrong. After White 2, Black loses the race.

Elementary level: Wrong Answer1



Elementary level: Wrong Answer 2

Black 1 allows White to play at the vital point 2.
Black loses the race.

Elementary level: Wrong Answer2



Intermediate level: Answer

Black 1 is the vital point and
3 is crucial to kill White.
If White 4, Black kills White with 5 and 7.

Intermediate level: Answer



Intermediate level: Variation

If White plays 4 to 6, Black creates
a Five-point Nakate with 7 and 9.

Intermediate level: Variation



Intermediate level: Wrong Answer

Black 3 is wrong. After White 4 to 8,
Black only gets a Ko with the moves to 13.
If Black 9 at 10, White plays at 9 and lives,
capturing the Black stones in an Oiotoshi.

Intermediate level: Wrong Answer



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