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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.

336678 puzzles downloaded.

  6              
      2 1   3    
      5 3 8 2    
  3   1          
  7           2  
          2   9  
    5 9 2 4      
    7   8 5      
              8  
Showing puzzle number: 3533
Puzzletype: Symmetrical Sudoku
Startnumbers: 22
Difficulty: Very easy (0)
Solution methods: SiSo SC
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