Clue: Duffer's problem
Duffer's problem is a crossword puzzle clue that we have spotted 6 times. There are related clues (shown below).
Referring crossword puzzle answers
Likely related crossword puzzle clues
Recent usage in crossword puzzles:
- Pat Sajak Code Letter - Aug. 10, 2013
- USA Today - Oct. 20, 2011
- Newsday - April 30, 2008
- New York Times - July 17, 1991
- New York Times - May 11, 1986
- New York Times - Nov. 15, 1981
