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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.

202329 puzzles downloaded.

  10 14   11       4           9  
    6 11 4 16 12           5      
    16         10       5   3    
    15             16     14 7   11
    2   13     14 7         11 16  
    3           15     2   12    
          11   15     3         6
            4   16 11   9 7     2
2     3 14   10 5   8            
6         7     12   9          
    1   15     11           13    
  9 5         16 3     7   1    
12   8 10     3             15    
    4   8       11         2    
      2           12 8 3 4 6    
  3           6       4   10 7  
Showing puzzle number: 106
Puzzletype: Symmetrical Sudoku
Startnumbers: 80
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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