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Sudoku: hard sheet 521

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 521 · 9×9
Owlpuzzlesowlpuzzles.com
  • Write 1 to 9 so every row, column and 3×3 box holds each number once.
1
16451982747253279125678361
2
27675381596214372552465395
3
3756745189741239835834522976
4
849172861946689637312926532
Answers on the next page.More free sheets: owlpuzzles.com/printable-logic-puzzles

Answers

Sudoku · Hard · Sheet 521
Owlpuzzlesowlpuzzles.com
1
531648792627395841984271635472963518895127364163584279348712956716859423259436187
2
954127368167583492382694157548319276219765843736248915695831724821476539473952681
3
329756184178934265645128937596382741412675398783419652251863479967541823834297516
4
786134259231965874495728361859472136173689542642513798317296485924857613568341927