| When | User | Flag Type | Description |
|---|---|---|---|
| 2013-03-14 04:12:18 | SoDesuKa | Well Constructed | |
| 2015-05-29 23:32:46 | vougalar | Well Constructed | |
| 2018-04-24 11:03:09 | Thumb | Well Constructed | |
| 2018-11-16 17:21:31 | morvan01 | Well Constructed | |
| 2020-06-11 22:35:23 | laocoon | Needs Fixing | It would be better to have an extra blackstone at J18 |
| 2023-09-18 13:49:27 | ranka | Well Constructed |