KyuExercise210/Attempts

White lives  

BCh If white plays first, he seems to live unconditionally.

White tenuki  

BCh Let's look at what happens when black plays first, starting with in previous diagrams.

Ko  

BCh So it seems W can tenuki if he is the ko master with .

BCh need to do other moves for B.

Dieter: here are a few

White dies  

BCh This sounds pretty convincing. Maybe we should remove the komaster part from the initial message, then, since it's irrelevant to the problem.

tapir: It is also strictly speaking no proper use of the term (here it is used as ko master = winning the ko) and thus a source of confusion. If a qualifier is needed "X wins the ko" should do the job.