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Sudoku: hard sheet 640

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 640 · 9×9
Owlpuzzlesowlpuzzles.com
  • Write 1 to 9 so every row, column and 3×3 box holds each number once.
1
96384595352463267752816483
2
2915917379638849627647126813
3
78561453119588679468192793
4
289267831714647145263486
Answers on the next page.More free sheets: owlpuzzles.com/printable-logic-puzzles

Answers

Sudoku · Hard · Sheet 640
Owlpuzzlesowlpuzzles.com
1
197865324823741659645329817951278463768134295432956178316497582289513746574682931
2
748632951259481376316795428623549187187263549495817632532976814974158263861324795
3
743851296861927345592634187179543862326798451458216739934162578617385924285479613
4
174268359326915748598743216765182493241397865839654127617439582982571634453826971