TwT: Assuming regarding (1) yes, it is alive. Would it deserve a proper refutation? (2) "solution tree" := "what you get clicking on "review". "First correct line" := in "solution tree" (counting top/down), i.e. the line using GREEN color next the the upper end of your monitor or other device of visualisation. [posetcay says: as move 7 N17 works, too.] I agree.
TwT: @lazy Master Ivan: (1) if you have look, please: After M1O2 is it really alive? (2) posetcay suggested N3 as alt. final move for the first correct line of the solution tree. that is still missing. Thank you.
Sorry, I do not understand #2.