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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.

317304 puzzles downloaded.

  4     8       7
  1             5
          2      
7   5            
      7 2 6      
            6   3
      3          
9             4  
3       5     8  
Showing puzzle number: 25262
Puzzletype: Symmetrical Sudoku
Startnumbers: 19
Difficulty: Very easy (0)
Solution methods: SiSo SC
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