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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.

135942634 puzzles downloaded.

  9   7         3
    7 3          
          8     1
    6           9
    2       5    
8     5       6  
  1       2 7    
3         7   8  
6     1   4   3  
Showing puzzle number: 413276
Puzzletype: Optimal Sudoku
Startnumbers: 24
Difficulty: Super hard (163)
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