| When | User | Flag Type | Description |
|---|---|---|---|
| 2013-02-16 05:57:16 | SoDesuKa | Well Constructed | |
| 2013-06-26 10:54:27 | Matrok | Needs Fixing | Missing variations. |
| 2013-12-15 05:55:24 | Akkaron | Needs Fixing | miss solution |
| 2015-01-04 16:13:20 | jusi | Needs Fixing | What is wrong with C1? Seem to be a valid solution |
| 2017-08-24 10:58:00 | gojerry | Needs Fixing | There are more solutions |
| 2018-11-10 02:16:28 | G1weist | Well Constructed |