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Answers

(No. 392: October 27, 2003)



Elementary level: Answer

Black 1 is the vital point.
If White 2, Black wins with the moves 3 to 7.
This is quite an easy problem,
but I once saw an amateur strong player miss this in a game.

Elementary level: Answer

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Intermediate level: Answer

Black 1 and 3 are crucial to create a Ko.
After White 4, Black plays 5. If White 6, Black takes Ko at 7.

Intermediate level: Answer

B5 : takes Ko at B1



Intermediate level: Answer (Variation)

If White 4, Black plays 5.
White cannot help creating a Ko with 6.

Intermediate level: Answer (Variation)



Intermediate level: Wrong Answer 1

Black 1 allows White to live with the moves 2 to 8(Seki).

Intermediate level: Wrong Answer 1



Intermediate level: Wrong Answer 2

Black 3 allows White to live with the moves 4 to 10.

Intermediate level: Wrong Answer 2


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