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Sudoku: hard sheet 509

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 509 · 9×9
Owlpuzzlesowlpuzzles.com
  • Write 1 to 9 so every row, column and 3×3 box holds each number once.
1
816891317847659286935769487741
2
2798274682237833963268731165
3
241372529341393828558973719261
4
49359186163723532752798281
Answers on the next page.More free sheets: owlpuzzles.com/printable-logic-puzzles

Answers

Sudoku · Hard · Sheet 509
Owlpuzzlesowlpuzzles.com
1
975381426648952137321746589437129865519863274862574913153297648294638751786415392
2
625831749348279615719456823263947581987165234451382976532618497874593162196724358
3
269534178348176295175289634726498513913765842854321967581947326637812459492653781
4
634589721817632459259417836126758943798243615345961287562174398981326574473895162