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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.

7439008 puzzles downloaded.

    1   12 5       7   13     4  
  4       9   11       5     15  
  9 16 10 2     15     1   3     5
3   2               8 10     12 6
  2 13     7 15   6     8        
      8 6   4 12 3           11  
4     14 11   5           10     16
  3     16 1   8 11 5 13          
          16 12 13 8   7 14     3  
2     6           4   9 5     1
  13           4 5 16   6 9      
        3     5   10 15     12 7  
12 10     8 3               5   15
13     4   6     15     2 12 8 10  
  11     4       12   5       16  
  1     13   16       11 7   9    
Showing puzzle number: 24762
Puzzletype: Symmetrical Sudoku
Startnumbers: 100
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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