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Sudoku puzzles 4x4 (Su Doku)

My database includes 34183 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. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

6283776 puzzles downloaded.

16   6   12     4   9     3 10   11
  1 8   7     6     5     16    
4 2                 6 3   13 12 8
  5       3 10     7   12        
        6     16   1   5     10  
13               9     16   14    
      10 15     9         16 5   12
            7 11 2   13   8 1   6
9   1 15   7   8 5 2            
2   5 4         11     1 12      
    14   2     13               7
  7     9   3   12     6        
        16   13     6 10       14  
3 13 2   1 9                 16 10
    7     14     4     2   6 9  
1   9 6     15   13     8   12   2
Showing puzzle number: 10209
Puzzletype: Symmetrical Sudoku
Startnumbers: 96
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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