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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.

7383801 puzzles downloaded.

5     7 16 4   13       1     12  
    1     5   9 10 3 11          
  9   16         7         5    
  10 6 15       14     4 8     2 9
    13   9     2     15   1 16   8
2 4 16 5             8       14  
12         14 4 1 16 13   9   2   7
6         13             4      
      6             1         5
1   8   6   5 3 4 9 16         2
  5       15             16 7 6 10
3   10 4   16     13     7   8    
8 15     4 2     9       6 10 1  
    11         8         3   13  
          1 9 16 14   10     11    
  1     13       12   3 6 2     16
Showing puzzle number: 18457
Puzzletype: Symmetrical Sudoku
Startnumbers: 100
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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