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Sudoku puzzles (Su Doku)

My database includes 2967 puzzles for the moment and I'm constantly generating more.

Rules: Fill in the grid so that every row and every column contains the digits 1 through 16. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

404194 puzzles downloaded.

  5 8       1 11 10   2 15     16  
      11   15 13   7     3        
3 4 14   10   2   16     7     5 13
8 7 4   2 1 6   12 16     3   13 5
    10 6     16     1 12 14 7 9 8 4
4 1   8 16     14 9 5       10   2
5 11 3   15 12     4 8 7   1     14
          16   3       6 2 8 4 1
6 9 15 16 13       8   14          
16     12   6 11 5     10 4   7 1 15
15   1       5 9 11     13 12   7 8
12 13 2 5 14 10 3     7     16 11    
2 10   4     9 15   13 6 5   1 12 11
7 14     3     16   15   8   5 11 12
        6     12   3 11   4      
  6     7 13   4 2 12       3 9  
Showing puzzle number: 2289
Puzzletype: Symmetrical Sudoku
Startnumbers: 138
Difficulty: Hard (0)
Solution methods: SiSo SC DC
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