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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.

        5 1       3   7 14 6   13
          3 7     8   6     12  
6 12   3   8 14 16 5 13       11    
15 1     12   11         9 2 8    
  10         13   12              
8 11 5         10   16       15   2
  6     9 7 3             10 4  
14   4   6       2   3 10 11   5  
  2   15 16 12   9       14   7   11
  3 8             2 7 16     13  
16   1       15   4         3 2 10
              3   12         6  
    16 1 11         6   4     14 8
    10       1 2 13 5 15   16   11 4
  9     7   10     1 16          
13   14 4 3   16       2 12        
Showing puzzle number: 17337
Puzzletype: Symmetrical Sudoku
Startnumbers: 104
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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