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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.

257845 puzzles downloaded.

    4 6 5   2    
          8   9  
  8              
  9   5          
1     8   7     9
          3   4  
              8  
  1   7          
    6   1 4 5    
Showing puzzle number: 55681
Puzzletype: Symmetrical Sudoku
Startnumbers: 22
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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