Gokyo Shumyo, Section 2, Problem 26 / Attempts

Solution  

blackman: I think this is a difficult problem. Black can play 'a','b' or 'c'.

Black plays at 'a'  

blackman: Black is dead.

Black plays at 'b'  

blackman: at and Black is left with a dead shape.

Black plays at 'c'  

blackman: This is a bit tricky, White should play .

Continuation  

blackman: Black is dead again.

Solution 2  

blackman: Black can play too.

Continuation  

blackman: Black is dead.

Alive?  

unkx80: I would thought that can live unconditionally.

Dead?  

unkx80: Therefore, the solution may well be to play directly.

Black is dead  

blackman: Yes, you are right. I think it goes like this, at , and Black is dead.