When	User	Flag Type	Description
2011-04-13 11:57:15	6473K339312	Well Constructed
2013-06-25 08:16:40	Matrok	Well Constructed
2013-09-06 20:10:41	blyx	Needs Fixing	the white H19 variation is about the same as the white J19 variation. Both should be marked as wrong.
2014-09-02 19:33:44	utku	Needs Fixing	black prefer f16 instead f18?
2014-11-10 02:13:03	mountain root	Needs Fixing
2015-07-15 20:47:31	veritas	Needs Fixing	correct solution marked wrong. solution on primary path doesn't work.
2016-04-04 08:27:25	raimox	Well Constructed
2017-11-07 03:08:11	DangerMouse	Invalid	Author's primary variation is wrong. This problem, as it stands, needs fixing.
2018-01-15 10:05:28	gojerry	Invalid	The solution only works if black makes a mistake!