| Rating | Solver | Clue |
|---|---|---|
| LABOURED | Difficult | |
| TROUBLESOME | Difficult | |
| PROBLEMATIC | Difficult | |
| TRYING | Difficult | |
| HARD | Difficult | |
| ROCKY | Difficult | |
| THORNY | Difficult | |
| DIABOLIC | Extremely difficult | |
| FIENDISH | Extremely difficult | |
| BRAINTEASER | Difficult problem | |
| STUMPER | Difficult question | |
| ORDEAL | Difficult experience | |
| TEASER | Difficult problem | |
| NUT | Difficult problem | |
| POSER | Difficult problem | |
| TREKS | Difficult journeys | |
| PREDICAMENT | Difficult situation | |
| TRICKY | Somewhat difficult | |
| HARDEST | Most difficult | |
| HARDER | More difficult | |
| MESSES | Difficult situations | |
| DILEMMA | Difficult choice | |
| INTRICACIES | Difficult parts | |
| MERE | Not difficult | |
| IMBROGLIO | Difficult situation | |