Answer to Q98

Answers

(No. 98: Mar. 9, 1998)

Elementary level: Answer

Black 1 , and then 3 is the correct order of moves.
After Black 7, White is dead.
If White 2 at 3, Black 2 kills White.

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under

Elementary level: Wrong Answer 1

Black 1 first allows White to live with 2 to 6.

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under

Elementary level: Wrong Answer 2

Black 1 also fails. White lives with 2.

Intermediate level: Answer

Black 1 is crucial to live. After White 2,
Black plays 3 and lives in Seki.

Intermediate level: Variation

If White 2, Black 3 is crucial.
After White takes the two Black stones at 4,
the next diagram.

Intermediate level: Variation (Continued)

Black retakes at 5. After White 6, Black 7 captures
the White stones and lives.

Intermediate level: Wrong Answer

Black 1 lets White to play 2 and get a Ko.
This is a ten-thousand-year Ko.