Daily Jigsaw Sudoku Competition for Dec 30

Number 4438, Tough
113 people took an average of 27 minutes to correctly complete this puzzle

by MM Multimedia. January puzzle packs Now Out!. Thanks for supporting our site.

Future Puzzle - will be submitted on the relevant day

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8     1   5     7
                 
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7               1
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6     5   7     9
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Design: ZigZag by Gérard Coteau