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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.

401422 puzzles downloaded.

                 
    4 3     5 2 8
    2   1   3    
  4         2 1  
                 
  3 6         7  
    1   2   6    
4 8 7     5 9    
                 
Showing puzzle number: 28679
Puzzletype: Symmetrical Sudoku
Startnumbers: 22
Difficulty: Super easy (0)
Solution methods: SiSo
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