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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.

95821355 puzzles downloaded.

      3       5  
        6     2  
1       5   8   4
8     6         5
      2       8  
2   5 4 3        
3             9  
    6 7     4    
    2       3    
Showing puzzle number: 413890
Puzzletype: Optimal Sudoku
Startnumbers: 24
Difficulty: Very hard (0)
Solution methods: SiSo SC SB DS NS FI
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