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Sudoku: hard sheet 637

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 637 · 9×9
Owlpuzzlesowlpuzzles.com
  • Write 1 to 9 so every row, column and 3×3 box holds each number once.
1
615842158693824753622861835471
2
5714942581742813931734667974
3
491673456752469539421843756589
4
3819962352319273187281342156
Answers on the next page.More free sheets: owlpuzzles.com/printable-logic-puzzles

Answers

Sudoku · Hard · Sheet 637
Owlpuzzlesowlpuzzles.com
1
492617358683954217175823469957432186264189735831765942329548671718396524546271893
2
389516724715428369462793518831975642276841953594632187153289476648357291927164835
3
827453916169827534435691278583276149246915387791384652912738465374562891658149723
4
254368197317945268896712435578623941962451783143879652685197324739284516421536879