Related Clues:

• A puzzle about ropes
• Baffling question or problem
• It's a riddle or a hard question
• Puzzle about ropes
• Particularly baffling problem
• Clue for Batman, maybe
• It's puzzling how it can be so full of holes
• It's puzzling why there should be so many holes in it
• It's a difficult question for the model
• The answer to this is that it's got holes in it
• So the firm sister might beat it with a 9 across
• It's difficult to be without difficulty inside
• It's a puzzle how it could be so full of holes
• This 9 across got firm with the good sister and then beat it
• It has 20 down with holes in