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Hard Sudoku — Puzzle 191

21
196
74
528
79
8519
6498
37
4529

Solve it here

Tap an empty square, then tap a number. Or print the page and use a pencil.

0 of 55 squares filled

Fill every row, every column and every 3 by 3 box with the numbers 1 to 9. This puzzle has 26 given numbers and exactly one solution.

928356714
453178926
716294358
579642183
162783549
834519672
641927835
295831467
387465291

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