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The smart Trick of sudoku hard - hard sudoku That Nobody is Discussing

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Naked and hidden singles are the simplest squares to unravel. A naked single is when a variety can only go in a single achievable mobile. A concealed single is when there is only mobile for your offered prospect. If you want to enter a pencil mark, click on/touch the square https://sudoku-hard---hard-sudoku76543.full-design.com/the-ultimate-guide-to-sudoku-hard-hard-sudoku-69396772

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