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Snapback Problem 13 Solution
After Black 3, a or b kills White. Is white #2 white's best defense? See below for options. Things that don't work.
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 2 @ a. However this loses, as shown above.
I propose White 2, 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.
White @ 4 looks promising (but actually fails)
To continue from figure 1, black 5 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 4 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. This is a copy of the living page "Snapback Problem 13 Solution" at Sensei's Library. (C) the Authors, published under the OpenContent License V1.0. |