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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.

107272201 puzzles downloaded.

    5 9 1   3    
  6       8   7  
4       7       1
  3             2
8   2       1   6
5             4  
6       4       5
  7   1       8  
    4   8 3 9    
Showing puzzle number: 4462181
Puzzletype: Symmetrical Sudoku
Startnumbers: 28
Difficulty: Super hard (13)
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