After , a or b kills White.
Is white's best defense? See below for options.
White lives and saves the marked stones with either a or b.
White lives with either a or b.
White lives with either a or b.
In the original solution, white plays @ a. However this loses, as shown above.
I propose , it secures an eye, and gives white the option to make another eye by playing a, b, or c. But it is black's turn, how does black kill now?
Obviously white @ a secures two eyes for white, so perhaps black playes there first.
looks promising (but actually fails)
To continue from figure 1, places the white group in atari . White @ c kills the black stone....
But then we are back to a basic snap back position. Black kills the 5 white marked stones by playing @ a. So white dies even in this position.
White's only other try is at which is self-atari.
So white really is dead, sorry I did not see that. Perhaps the above options are obvious, but probably not to all.