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Sudoku puzzles (Su Doku)

My database includes 6913752 puzzles for the moment and I'm constantly generating more.

Rules: Fill in the grid so that every row, every column, and every 3x3 box contains the digits 1 through 9. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

127787490 puzzles downloaded.

1         4      
    3           9
              7 6
      9     1    
  9              
  8   6     2    
        5 8      
4   6     7      
2           5   3
Showing puzzle number: 6900670
Puzzletype: Optimal Sudoku
Startnumbers: 20
Difficulty: Very easy (0)
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