guile: Just because a comment is misleading : it is definetely dead after A18. The descent A15 in combination with the cut B17 remove the leg. It is unavoidable because white can force a bent four in the corner with A18 and B19 otherwise.
posetcay: The previous comment is referring to the linked sgf file, not to T18 as first move.
The previous comment is referring to the linked sgf file, not to T18 as first move.