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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.

329928 puzzles downloaded.

1         5 6 2  
7   2 1          
  3              
  7 3 4          
                 
          3 7 9  
              3  
          6 5   9
  6 7 5         8
Showing puzzle number: 44694
Puzzletype: Symmetrical Sudoku
Startnumbers: 22
Difficulty: Medium (0)
Solution methods: SiSo SC SB DS
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