GokyoSeimyoVolume3Problem37/Attempts

at  

After , Black can play neither a nor b.

at  

Dave: Am I missing something? What happens after this ? Shouldn't be played before ? If then , White plays and Black is unable to respond. If Black answers the play at with a, White throws in at and the line reverts to the solution above.

AVAVT: oh sorry, my bad. I think it is as you said, at . I saw this problem quite a long time ago and only remember vaguely. Please edit & clean up this page as you like after this.

Black lives  

A better variation for Black, but White can still capture the 2 Black stones and rescue the marked stone.