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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.

400188 puzzles downloaded.

6             4  
  8           2  
  7     6   5   9
      5 2        
    7 8   9 3    
        1 3      
1   5   8     6  
  9           3  
  2             8
Showing puzzle number: 4543
Puzzletype: Symmetrical Sudoku
Startnumbers: 24
Difficulty: Super easy (0)
Solution methods: SiSo
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