| When | User | Flag Type | Description |
|---|---|---|---|
| 2010-02-19 01:03:55 | SeerRus | Well Constructed | |
| 2012-06-18 21:56:55 | GameCarpenter | Needs Fixing | An incorrect line is marked as correct due to bad resistance (see BartTM's comment.) |
| 2013-03-21 05:55:49 | daxiao | Needs Fixing | see comment from BartTM |
| 2014-05-02 18:46:36 | foxgloves | Well Constructed | |
| 2014-10-14 14:10:09 | eurikano | Well Constructed | |
| 2017-11-10 04:15:38 | Brightside | Well Constructed | |
| 2021-04-20 09:57:09 | Thumb | Well Constructed |