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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.

328637 puzzles downloaded.

16 6   2       3 11 9 4   8 14 5 12
6 3       8 5   9       4      
13   2     9 7     14 5 12 15   4 8
  9   13   5     8 12 16   3   7  
    4   8     14     2 1   11 16 15
5   13 12           2   10   3 1  
  16   10 12 1   11     9   7   14 6
10 7     6 13   12   3   16        
        13   16   10   14 8     12 11
3 2   9   16     5   12 7 11   15  
  15 9   2   12           6 16   4
4 12 11   7 15     1     3   5    
  10   16   14 4 9     15   2   3  
1 11   5 15 4 6     10 13     2   3
      6       7   4 11       8 13
2 5 12 1   11 9 15 4       13   10 16
Showing puzzle number: 2335
Puzzletype: Symmetrical Sudoku
Startnumbers: 132
Difficulty: Hard (0)
Solution methods: SiSo SC DC
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