KyuExercise65/Solution

Sub-page of KyuExercise65

Solution

The status is Black lives.

[Diagram]
Black lives  

White should not play anything on the left after B4, because Black can tenuki and still live.


Some continuation

[Diagram]
White can not kill  

togo: B6 is not necessary, Black could tenuki instead, and still live.

miai: Can someone show how B6 is unnecessary?

[Diagram]
Black wins the race.  

White W3 is the strongest resistance White can offer. White can not atari Black due to shortage of liberties.


[Diagram]
idigo's explanation  

idigo: Black has a total of 5 liberties here, counting a twice since White must first play at b to remove the liberty at a. The marked white stones have effectively 3 liberties, since White will have to connect at b to win the race, giving White only 3 internal liberties (shared liberties in this semeai go to Black, who has the eye). Moreover, White can't get any more liberties with exchanges at c or d (c and d are miai for reducing White's liberties). Therefore I believe that White dies here.


KyuExercise65/Solution last edited by 68.132.63.113 on July 31, 2018 - 04:00
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