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Sudoku noun

(also Su Doku) Click to hear the UK pronunciation of this wordClick to hear the US pronunciation of this word/sʊˈdɒk.uː/, /sʊˈdəʊ.kuː//-ˈdɑː.kuː/, /-ˈdoʊ.kuː/ n [U]

Definition

a number game in which you have to write a number between 1 and 9 in each small box of a 9x9 square

(Definition of Sudoku noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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