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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.

3 12 5     4   11     13 7     15 16
      14     8   1 11       5    
12   4   10       2   5   7 6 13 1
16     11 3     8 14   6   5   1  
8 14 3 2       4 13     1   7 11  
13 2 7 6   1       15   4     10 14
2   10     6   1 3 5 16 15       8
14     8 9 15 4       11     1 6  
  10 6     13       16 9 8 14     12
5       16 3 12 14 10   15     8   2
6 11     15   1       4   3 12 9 13
  13 12   7     9 6       16 4 8 11
  9   1   5   2 15     3 8     6
11 16 15 4   8   13       12   2   10
    11       16 7   9     2      
15 5     12 2     9   14     16 7 3
Showing puzzle number: 218
Puzzletype: Symmetrical Sudoku
Startnumbers: 132
Difficulty: Hard (0)
Solution methods: SiSo SC DC
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