Related Clues:
- Difficult problem or coarse sieve
- Brain-teaser
- Question to test ingenuity, something puzzling
- Coal from a dying fire
- Kind of puzzle or coarse sieve
- Puzzle or strainer
- A puzzle - or a sieve
- Sieve or conundrum
- Residue of a fire
- A dying coal in fire
- Brain-teaser and coarse sieve
- Puzzle or sieve
- A puzzle or a sieve
- Glowing remainder of a fire
- Word puzzle or coarse sieve