Vincible:
It seems to me, that the count of white liberties is incorrect by one every time? Once black takes all common liberties, there are still 2 outside ones.

posetcay:
D19 is only a single liberty because white has an eye.

hoshi911:
Same problem as with "Capturing Races 177/180": Black should be dead. Solution says "unsettled", because white and black have both 4 liberties. But black has only there liberties! The liberty of black at D19 counts only one, because white does not have to play B19 beforehand, if this is the last liberty of black he wants to fill. So correct would be: black three liberties, white four liberties; And black is dead.