semelis: After the atari at A17, instead of connecting at C17, D19 seems to bring a ko and not sudden death. Or else H18 is answered at A15 to not lose everything.
posetcay: Ko is heavy for white, so I can't say it is strictly better than letting black live. The sequence shown in the problem is fine as a resistance in my opinion.
Ko is heavy for white, so I can't say it is strictly better than letting black live. The sequence shown in the problem is fine as a resistance in my opinion.