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Sudoku puzzles disjoint groups (Su Doku)

My database includes 67954 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. The cells with the same color must also contain the digits 1 through 9. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

321991 puzzles downloaded.

    3            
  4       1 7    
1     5 7 9 2    
3             2  
    5       4    
  1             3
    6 2 9 7     5
    4 3       7  
            3    
Showing puzzle number: 9616
Puzzletype: Symmetrical Sudoku
Startnumbers: 24
Difficulty: Super easy (0)
Solution methods: SiSo
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