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Sudoku puzzles irregular and disjoint groups (Su Doku)

My database includes 131 puzzles for the moment and I'm constantly generating more.

Rules: Fill in the grid so that every row, every column, and every box contains the digits 1 through 6. 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.

120959 puzzles downloaded.

    9         1  
  5              
              5  
                 
1 7   2 3 5   8 4
                 
  2              
              2  
  4         6    
Showing puzzle number: 15
Puzzletype: Symmetrical Sudoku
Startnumbers: 15
Difficulty: Very easy (0)
Solution methods: SiSo SC
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