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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.

7646280 puzzles downloaded.

16       5 7 3 1       8   13 6  
  5                   16       8
10 3   6 16   13       9       14  
        14 2   8   7 12   15 5   16
    13 2 3   4 10           9 7 11
5           6 15   4 7 11        
  6   15       13 3   14 2 12     4
  14           12 10 9       6   15
15   2       1 11 9           5  
3     8 9 15   6 13       4   1  
        8 10 2   5 16           14
13 11 5           15 10   12 8 2    
8   15 12   9 7   11   5 1        
  13       1       15   10 11   12 5
6       11                   15  
  1 10   15       7 12 3 9       2
Showing puzzle number: 7390
Puzzletype: Symmetrical Sudoku
Startnumbers: 108
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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