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Related Clues:
- See 28-Down
- Numbers game
- Puzzle that moved from the U.S. to Japan to England and back to the U.S.
- Recent puzzle page addition
- Puzzle with number squares
- Logic-puzzle fad
- Popular number puzzle
- *Paper puzzle usually involving a 9x9 grid (2004)
- Cardinals are placed in it
- Number-logic puzzle
- Subject of a 2009 national tournament cheating scandal
- Craze of 2005-06
- Popular logic-based puzzle
- Diversion with 81 squares
- A distraction of questionable kudos anyone can see