Possible Clues:

• Number in wrestling 50% down, starts to kit up for game
• Typically 81-digit diversion
• Digital poser
• Puzzle from the south of France all right, you said
• (Usually) nine-by-nine numbers puzzle
• Number game
• 3 x 3 x 3 container?
• Numbers one to nine on square provides poser
• 9x9 number puzzle
• Craze of 2005-06