Related Clues:

• Part of bizarre business that's puzzling
• "Concentration" feature
• Puzzle creator to shake over horror film?
• Detective on public transport
• Puzzle sometimes framed
• Puzzle with pluses and minuses
• Pictorial puzzle
• Many-pieced puzzle
• Puzzle of president mainly supporting soldiers
• I C U, e.g
• Puzzling symbols, etc, on vehicle
• Puzzle about boat's return
• A fitting present for a puzzle enthusiast?
• Puzzle — powered cutter
• Game inside a Narragansett beer bottle cap