| When | User | Flag Type | Description |
|---|---|---|---|
| 2009-11-15 06:29:42 | maimai | Well Constructed | |
| 2011-01-05 04:05:03 | Moringer | Well Constructed | |
| 2013-06-20 04:09:03 | Matrok | Well Constructed | |
| 2013-10-24 14:20:24 | lkkl15 | Well Constructed | |
| 2014-11-10 06:05:27 | mountain root | Well Constructed | |
| 2015-05-15 12:35:58 | tenuki89 | Well Constructed | |
| 2016-03-26 10:23:24 | hooibergje | Well Constructed | |
| 2016-05-26 19:13:01 | ufjl0924 | Needs Fixing | solution is not correct!!! |
| 2017-06-03 23:41:47 | Onishi T | Well Constructed | |
| 2017-11-03 20:59:56 | GoNovice | Well Constructed | |
| 2020-10-27 00:50:25 | cteix | Well Constructed |