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Answers

(No. 399: December 15, 2003)



Elementary level: Answer

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

Elementary level: Answer

Black 5 : retakes at Black 3

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Intermediate level: Answer

Black 1 is the vital point.
If White 2, Black gets a Ko with 3.

Intermediate level: Answer



Intermediate level: Answer (Variation)

If White 2, Black gets a Ko with 3 and 5.

Intermediate level: Answer (Variation)



Intermediate level: Reference Diagram

Black 1 also gets a Ko with the moves to 7,
but it is a two-stage Ko, less advantageous to Black.

Intermediate level: Reference Diagram

Black 7 : takes Ko at Black 1


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