GokyoShumyoSection2Problem20/Attempts

 

xela: and are a standard combination to undermine the eye at 'a'.

 

unkx80: You may want to consider this variation.

 

xela: White continues this way? White 'a' next, and black can't escape... but it looks messy. Is there a better way?

(If throws in at the marked stone, then at makes a seki.)

Yohei: looks ok, but the , exchange is bad timing.

 

Black needs to answer at (or at a, but this makes very little difference), and now white can exchange for .

 

xela: On second thoughts, this looks better. Black can't play 'a'.

 

blackman: Black can play this way too.