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Beginner Exercise 69 Solution
lavalyn observes stuff: Black doesn't need to live inside to kill White - only ensure White doesn't have 2 eyes. So Black prepares to sacrifice some more stones to ensure this occurs. Of course, for some reason I see TWO routes to death. Also, it looks like White is already unconditionally dead, even with White's move.
Like the corner pseudo-seki, this group must die - to capture the five black stones leaves White with a bulky five shape. White can be put into atari at Black's leisure - that's not even necessary of course, but possible.
This time around, Black prepares to make a rabbity six? in White's eyespace - and it looks like he succeeded. Am I missing a corner rabbity six seki? Of course, even if both were deaths, the first solution is superior - no ko threats afterward in the position, whereas in the latter there is one life ko threat.
Trying to live in the constricted space is impossible - White can keep Black to one eye.
This is a copy of the living page "Beginner Exercise 69 Solution" at Sensei's Library. (C) the Authors, published under the OpenContent License V1.0. |