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Sudoku puzzles disjoint groups (Su Doku)

My database includes 656 puzzles for the moment and I'm constantly generating more.

Rules: Fill in the grid so that every row, every column, and every 4x4 box contains the digits 1 through 16. The cells with the same color must also contain the digits 1 through 16. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

243635 puzzles downloaded.

  2     14   7   4   10         3
  4 10           12   11     2    
              11             4 15
        4     9     7 13 8 11 1  
    9     14                    
14       10     12 5   2 16     3  
2         8 3     4   10     14  
      10       1   9 14   6      
      5   1 16   11       3      
  6     3   13     10 9         11
  16     11 6   14 3     1       7
                    5     14    
  11 6 1 2 7     13     4        
15 12             9              
    7     11   3           5 6  
10         4   6   7   15     11  
Showing puzzle number: 334
Puzzletype: Symmetrical Sudoku
Startnumbers: 82
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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