noun su·do·ku \sü-ˈdō-kü\

Definition of SUDOKU

:  a puzzle in which several numbers are to be filled into a 9x9 grid of squares so that every row, every column, and every 3x3 box contains the numbers 1 through 9

Origin of SUDOKU

Japanese sūdoku, short for sūji wa dokushin ni kagiru "the numerals must remain single" (i.e., the digits can occur only once)
First Known Use: 2004


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