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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.

287218 puzzles downloaded.

                1
  3       2      
      9         7
    4 7     6   5
  5           9  
2   3     1 7    
8         6      
      2       4  
6                
Showing puzzle number: 26045
Puzzletype: Symmetrical Sudoku
Startnumbers: 20
Difficulty: Very easy (0)
Solution methods: SiSo SC
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