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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.

5583918 puzzles downloaded.

7     6 4   8 9   11 3       13  
4   13   11     15 2           9  
  5 14   3 2 10       6     7    
10         13           16   5 12 3
5     4 8     2 13   7   16      
15   9 13               1        
16     8 5   3 13   4 14 9   15    
            15       5   9 8    
    16 14   11       3            
    8   2 15 13   11 7   14 6     16
        10               15 14   5
      12   6   14 15     4 8     11
12 4 2   6           1         7
    7     14       5 4 11   10 15  
  1           12 9     7   11   14
  11       4 7   8 16   3 1     12
Showing puzzle number: 33572
Puzzletype: Symmetrical Sudoku
Startnumbers: 102
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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