Related Clues:
- 10, on the Mohs scale
- Most difficult animal carrying little boy
- Rating a 10 on the Mohs scale
- Tangled threads most difficult to unravel
- Spinning threads can be most difficult
- Most regular meal fails to fill a good chap
- Disentangling threads is most difficult
- Red hats (anag.)
- Most even
- Most dependable plan stateside
- Still the most?
- The ultimate in knots
- Most constant
- Badly trashed, like last clue solved?
- Most difficult dart he's thrown