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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.

310511 puzzles downloaded.

10 8 9   4       13   2 7 6 11    
6   10 2 9 12 11 1 8   5   4     13
2     10     16     13         5 8
11   7 13     9 10   8       6    
16 1   14 8 4 7       3 2       5
  13 11 12   6   14             2  
  3   11   14     9   8 4 13 16 15  
    2   5 3   8   16 14     12 4 9
1 16 5     7 14   4   11 3   9    
  2 12 15 16 11   4     6   3   9  
  10             5   7   12 14 6  
9       7 2       3 1 12 10   13 14
    14       2   10 9     16 7   6
15 4         13     1     7     12
4     1   5   13 3 6 10 9 2 8   11
    3 6 11 8   5       13   4 14 10
Showing puzzle number: 131
Puzzletype: Symmetrical Sudoku
Startnumbers: 132
Difficulty: Hard (0)
Solution methods: SiSo SC DC
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