The table of notchers indicates that for this notcher Black can live or White can kill.
After , Black is dead.
a and b are miai. kmr-This black "4" looks like death in gote. White does not need to play 5 at all, black is still dead (if black 4, white tenuki, black 5, white descend to egde and kill, if 6 instead of 5, then white play at 7 and black is dead).