Is Black alive ?
Var 1
Var 2
Black has enough oustide liberties to capture the four stones.
Var 3
Black makes miai of a and b.
Var 4
(unkx80: Why not play 2 at 5? :-))
Var 4 - ctd
The points 1 and 2 are miai
Referenced byKanazawaProblem56...