Ten-point eye - possible seki

  Difficulty: Intermediate   Keywords: Life & Death
Black makes seki  

What about this?  

Can Black still make seki?

Black dies  

Charles After B1, W2 wins the fight me ari me nashi.

Therefore B1 here must come first. After B3, W4 prevents a 10000 year ko, which is usually preferable to seki for Black. Instead of W2, White can make a ko with W3. (Usually bad for White, however.)


Bill: If White is komaster he can play this ko.

Another seki  

Bill: White is in little danger, because the ko preserves the option of seki while taking sente.

White is one point worse off locally than with the seki in the first diagram. This could be best if Black has had to make a losing ko threat.

Ten-point eye - possible seki last edited by Bill on April 13, 2006 - 16:23
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