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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.

7646280 puzzles downloaded.

6 4     16 15     3       10      
    15       12 8       2 13 5    
10 1     2 13   3     14 12     11  
      3     7     10 9   4      
      15 7       6     8       2
    4 2             16     1    
3   7       14   5 15 13 10     4  
16 8       6   13   1     15      
      10     9   7   15       2 6
  11     15 4 1 10   14       9   7
    9     7             3 4    
12       11     6       4 5      
      6   11 3     13     9      
  9     6 5     16   10 15     8 4
    2 4 1       14 7       3    
      11       7     2 5     1 12
Showing puzzle number: 9992
Puzzletype: Symmetrical Sudoku
Startnumbers: 96
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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