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Sudoku: hard sheet 721

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 721 · 9×9
Owlpuzzlesowlpuzzles.com
  • Write 1 to 9 so every row, column and 3×3 box holds each number once.
1
1857393669873865746854354283
2
43913567596147828751586398
3
274631254785612172372354128597
4
97653491231698853328459847
Answers on the next page.More free sheets: owlpuzzles.com/printable-logic-puzzles

Answers

Sudoku · Hard · Sheet 721
Owlpuzzlesowlpuzzles.com
1
413658792659723481827491356146985273398172645275346819584239167731564928962817534
2
572691438369842571814735926785963214291457863436128795123589647657214389948376152
3
257469381698231574413578629536142798729853416841697253984726135375914862162385947
4
942678513716532498538491672473825169291364785685917324357286941124759836869143257