Related Clues:

• ''Cheese'' sayer
• Confusing question
• One in a pic
• Challenging puzzle
• Tough riddle
• Math exercise
• It's a mystery
• Situation, so to speak
• Inscrutable sort
• Puzzle or fashion model
• Difficult question
• Leak on a ship, e.g.
• Confusing query
• "Hmm" provoker
• Mathematical challenge