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Bright Champs - The name Sudoku comes from Japanese word Su (meaning 'number') and Doku (meaning 'single') but it was not invented in Japan. Sudoku originated in Switzerland and then traveled to
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Where Was Sudoku Invented? It's Not Where You think! | Play Free Sudoku, a Popular Online Puzzle Game
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Chris Baker on Twitter: "The Guardian have ruined my Sunday!!! Sandwich Sudoku is so addictive! #puzzles #brainoverload #sandwichsudoku 🥪🥪🥪🤓🤓🤓 https://t.co/SKTf7R2wYi" / Twitter
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