Answer: sudoku

AnswerCrossword Clue
SUDOKU

Cardinals are placed in it

SUDOKU

Numbers game

SUDOKU

Puzzle with number squares

SUDOKU
Recent puzzle page addition
SUDOKU
Subject of a 2009 national tournament cheating scandal
SUDOKUNumber puzzle
SUDOKUTypically 81-digit diversion
SUDOKU9x9 number puzzle
SUDOKUDigital challenge
SUDOKUCrossword alternative
SUDOKUCraze of 2005-06
SUDOKUDiversion with 81 squares
SUDOKU3 x 3 x 3 container?
SUDOKUNumerical puzzle with a 9x9 grid
SUDOKUDigital game?
SUDOKUNumbers puzzle
SUDOKUDigital poser
SUDOKUNumbers game?