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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.

216429 puzzles downloaded.

  1         2    
      5 6 4 1    
    4       8    
  6   8 2        
4               3
        4 6   5  
    9       4    
    2 7 5 9      
    3         8  
Showing puzzle number: 56592
Puzzletype: Symmetrical Sudoku
Startnumbers: 24
Difficulty: Super easy (0)
Solution methods: SiSo
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