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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.

4917728 puzzles downloaded.

5     2     1   14         16 9  
    1   14   10   4 15     12   2  
7       3     12           11 14  
    14 6 15   5             13 1  
  16     8   3   10 5 12         4
    13 9     16       1   7      
    6 12     2   16   9       5 3
  7   3 9       13   11 14        
        11 15   16       9 5   13  
1 8       13   3   6     16 12    
      4   5       11     10 8    
6         10 12 8   1   4     15  
  15 10             12   1 8 6    
  11 7           9     6       13
  3   14     8 6   7   11   5    
  6 16         5   8     2     9
Showing puzzle number: 27560
Puzzletype: Symmetrical Sudoku
Startnumbers: 98
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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