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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.

6009644 puzzles downloaded.

4   11   1 9       12 13 7        
2     1 10     12 14   3       13 5
    3     7 2     6   1       8
7         4 6     10       12 2  
16         5           6 9   14 10
    14     16     15       1      
9 3 2 6   14 1 10       4 7     12
  5   13   3         2 12        
        9 2         12   8   16  
13     3 5       16 4 8   12 14 6 2
      14       6     1     5    
5 8   12 13           6         4
  13 7       15     5 4         6
15       12   10     11 14     4    
12 1       13   8 3     2 14     15
        7 11 14       15 8   13   16
Showing puzzle number: 25305
Puzzletype: Symmetrical Sudoku
Startnumbers: 104
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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