Answer: UNSOLVED
The answer UNSOLVED has 13 possible clues. See the results below.
Possible Clues:
- Like some mysteries
- Like Fermat's Last Theorem, until 1994
- Like this crossword, initially
- Too difficult, this clue will be
- Poirot’s cases were never so like a baffling crossword?
- Remained a mystery why the crossword wasn't filled in
- Crime may be so like some clues
- Remaining a mystery
- Not worked out
- Not explained