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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.

401306 puzzles downloaded.

6 2             3
        8     6  
8 1           2  
      1 7     3  
9               2
  3     4 2      
  8           4 5
  5     2        
3             8 7
Showing puzzle number: 37506
Puzzletype: Symmetrical Sudoku
Startnumbers: 24
Difficulty: Medium (0)
Solution methods: SiSo SC SB DS
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