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Sudoku: hard sheet 664

4 puzzles on one page and the answers on the next. Every sheet number from 1 to 999 has its own puzzles.

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Sudoku

Hard · Sheet 664 · 9×9
Owlpuzzlesowlpuzzles.com
  • Write 1 to 9 so every row, column and 3×3 box holds each number once.
1
37965157228147139538292641
2
518539681739861394675678219789
3
31834763357116475718614298356
4
529463851687163982768469652
Answers on the next page.More free sheets: owlpuzzles.com/printable-logic-puzzles

Answers

Sudoku · Hard · Sheet 664
Owlpuzzlesowlpuzzles.com
1
837496152921385674456172398269847531384951726175623849612534987548719263793268415
2
476281953182395647539746821723459186865173492941628735657834219314962578298517364
3
731289645629354178485176293358762914916843752274591386167425839593618427842937561
4
671845293429673581358192647834521976517968432296734158942317865183456729765289314