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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.

100553677 puzzles downloaded.

4             3 1
  9     1   7    
2 1 3            
    2 6 5 1      
  5   8   2   9  
      7 3 9 5    
  8         2 1 6
7       8     4  
1               8
Showing puzzle number: 4606256
Puzzletype: Slider Symmetrical Sudoku
Startnumbers: 30
Difficulty: Super hard (4)
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