When	User	Flag Type	Description
2015-12-19 16:07:41	kevinwm	Well Constructed
2016-03-31 00:08:15	gomaster135	Well Constructed
2016-05-16 13:14:26	raimox	Well Constructed
2016-08-06 12:51:27	nimbim	Well Constructed
2018-12-04 17:42:46	Aristotle	Well Constructed
2019-10-06 21:03:23	Starline	Well Constructed
2020-12-04 13:14:30	飛鏢小辣椒	Well Constructed
2021-01-27 10:37:53	Zrizt	Invalid	This problem is invalid because white can live unconditionally. After black at B3, white can live at D1.