When	User	Flag Type	Description
2017-08-24 15:41:36	kevinwm	Invalid	Single solution is inappropriate and the given solution is wrong. It's more important to support the single stone at C5 than extend the living group at C16.
2017-08-27 00:14:16	Onishi T	Needs Fixing
2023-02-24 13:28:09	tsubokawa	Invalid