| Rating | Solver | Clue |
|---|---|---|
| UNASSISTED | Unaided | |
| INDEPENDENT | Unaided | |
| SINGLEHANDED | Unaided | |
| SOLO | Unaided | |
| SINGLE-HANDED | Unaided (6-6) | |
| NAKEDEYE | Unaided vision | |
| NAKED EYE | Unaided vision (5,3) | |
| NAKED | Unaided vision, ... eye | |
| UNBACKED | Not supported or encouraged; not countenanced; unaided. | |