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Sudoku: hard sheet 644

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 644 · 9×9
Owlpuzzlesowlpuzzles.com
  • Write 1 to 9 so every row, column and 3×3 box holds each number once.
1
686524526742619481987436736
2
71956434917581924895542183
3
458332217376895398126712835
4
27131852475824766515761269
Answers on the next page.More free sheets: owlpuzzles.com/printable-logic-puzzles

Answers

Sudoku · Hard · Sheet 644
Owlpuzzlesowlpuzzles.com
1
672854139983671524541329678397465281865712493124938765219586347436197852758243916
2
274193586591486273386752491928564317765831942143279658619347825837925164452618739
3
495628731731459268862173459214536987678291543953784126589312674347965812126847395
4
692714385417385629853692471136457298528931746749268513265149837984573162371826954