| When | User | Flag Type | Description |
|---|---|---|---|
| 2012-10-21 15:00:24 | InExtremis | Needs Fixing | solutions missing |
| 2015-10-28 04:26:53 | Skomoroh.KGS | Well Constructed | |
| 2017-08-14 10:56:58 | gojerry | Needs Fixing | missing solutions |
| 2018-03-20 10:44:06 | Thumb | Needs Fixing | See comments, e.g. Archimede's |