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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.

402754 puzzles downloaded.

1     3 2 8 5    
      7     3    
5         4      
                4
  9           1  
8                
      4         7
    4     5      
    7 6 1 9     8
Showing puzzle number: 66045
Puzzletype: Symmetrical Sudoku
Startnumbers: 22
Difficulty: Medium (0)
Solution methods: SiSo SC SB DS
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