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Sudoku: hard sheet 520

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 520 · 9×9
Owlpuzzlesowlpuzzles.com
  • Write 1 to 9 so every row, column and 3×3 box holds each number once.
1
315691852784375414651372938
2
59167427384715498964264523
3
7142599853473261665128784567
4
4128761343597453574517648691
Answers on the next page.More free sheets: owlpuzzles.com/printable-logic-puzzles

Answers

Sudoku · Hard · Sheet 520
Owlpuzzlesowlpuzzles.com
1
792831465563742981184569273618253794239174658475698132846925317357416829921387546
2
758391264391246785462875913849753126613982547275614398937168452526439871184527639
3
723495861146728593985613274867951342439286715251374689694537128378142956512869437
4
476391825381425769259786134123854976748169253695273418517648392934512687862937541