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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.

361064 puzzles downloaded.

    4     8     6
5           4 7  
    8         3  
          9      
    2 7   4 1    
      6          
  5         8    
  2 9           7
8     1     9    
Showing puzzle number: 32180
Puzzletype: Symmetrical Sudoku
Startnumbers: 22
Difficulty: Very easy (0)
Solution methods: SiSo SC
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