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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.

364164 puzzles downloaded.

    2           4
  4   1 8        
1 5     7       3
    3            
2     8   1     5
            9    
3       2     5 6
        5 6   1  
6           7    
Showing puzzle number: 64503
Puzzletype: Symmetrical Sudoku
Startnumbers: 24
Difficulty: Very easy (0)
Solution methods: SiSo SC
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