Related Clues:

• It's hard to untangle
• Reason to be at sea?
• Question meant to stump
• Artist's model
• Puzzlement
• Mystery or riddle
• Brain teaser
• Looking back, morning drink provides energy? That's difficult to believe!
• Notice test opener's dropped a sitter
• The attitudiniser's baffling question
• Problem as son replaces wife in government
• This puzzle is a sitter!
• Conundrum to resolve in game
• WW two Ger. code device; puzzle
• A puzzling thing