Late endgame exercise - Fujitsu 8 Game 9 / Solution

After White fills the dame (marked):

[Diagram]
Reinforcement is needed  

Black has to play at 1 to prevent seki. Black can only avoid seki by ignoring a ko threat, which costs too much to be acceptable.

[Diagram]
If Black does not reinforce  

Black can't afford to play the ko at a, and has to settle for a seki at b.


[Diagram]
Another solution?  

ProtoDeuteric: Why can't black simply make two eyes by playing B1 here?

unkx80: Either way works.


Late endgame exercise - Fujitsu 8 Game 9 / Solution last edited by Unkx80 on February 21, 2005 - 07:24
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