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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.

4597093 puzzles downloaded.

      15             13 11   1   14
    11       1 12 9         13    
14 8 12     3 15 13   5       9 6 16
  1   13 14                   10 3
          2   7   15   16 6     9
  7           5                
9 14 6   12 13     1 3   2 16 5 4  
  12 2   9 14 16   7 4         11  
  6         4 8   7 3 12   16 14  
  11 3 9 7   2 1     14 10   6 8 4
                15           1  
12     4 6   10   2   8          
6 2                   4 13   9  
8 15 13       6   3 9 16     4 2 5
    7         3 10 2       12    
11   16   4 10             15      
Showing puzzle number: 23116
Puzzletype: Symmetrical Sudoku
Startnumbers: 104
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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