| When | User | Flag Type | Description |
|---|---|---|---|
| 2009-07-09 20:35:53 | Cei | Well Constructed | |
| 2010-03-05 08:28:48 | SeerRus | Well Constructed | |
| 2012-06-08 02:13:19 | boltathor | Needs Fixing | More than 1 solution |
| 2012-09-15 03:05:51 | Akkaron | Well Constructed | |
| 2013-03-12 18:21:28 | enigm4 | Well Constructed | |
| 2013-04-28 05:31:57 | draq | Needs Fixing | k3 is also a valid solution |