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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.

6911639 puzzles downloaded.

6 9       7 14           3      
  10 13     9   5 7       4   1 2
            12       11   13      
12       11     13   9 15 2 5      
1         6       4 9     3   5
    15     1   14       6   16    
16 3 6 7   5 8   12 2   10   9    
9 4 8   15       13           10 11
3 12           8       4   2 5 13
    4   7   9 3   16 5   11 6 12 10
    11   5       6   13     1    
8   10     12 11       1         9
      10 12 4 16   9     11       7
      14   11       8            
13 11   1       9 15   7     4 16  
      9           5 16       14 8
Showing puzzle number: 2965
Puzzletype: Symmetrical Sudoku
Startnumbers: 102
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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