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English definition of “sudoku”

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sudoku

noun [U or C] uk   /sʊˈdɒk.uː/ /sʊˈdəʊ.kuː/ us    /-ˈdɑː.kuː/  /-ˈdoʊ.kuː/
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 from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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