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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.

397420 puzzles downloaded.

          8      
  2 4     9      
  1           3  
    5     7     1
  6 1       9 5  
7     6     8    
  5           2  
      2     7 1  
      1          
Showing puzzle number: 41632
Puzzletype: Symmetrical Sudoku
Startnumbers: 22
Difficulty: Super easy (0)
Solution methods: SiSo
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