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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.

132403598 puzzles downloaded.

            1    
1     3 6   7 5  
              6 4
  7   6 9   8    
  1 8     2      
5   9 8   7   3  
7                
                8
2   5   1 9      
Showing puzzle number: 6312717
Puzzletype: Optimal Sudoku
Startnumbers: 26
Difficulty: Medium (0)
Solution methods: SiSo SC SB DS
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