WhenUserFlag TypeDescription
2012-10-25 00:55:55minoru19Needs FixingIf black plays c19 instead of B13, then white is forced to play A14 and then it is not ko, because black plays B19 and now white group is dead (black makes two eyes at A19 and B18)
2014-08-15 13:49:05shiitake01Needs Fixing
2017-08-29 13:54:06BartTMNeeds FixingThis problem needs White to be able to escape along the side should Black choose to extend to C19, otherwise there would be no valid solution.