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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.

399578 puzzles downloaded.

5 7 6   2 15         10   3   12  
7     10   12     11 1   2 15 3    
    14   5 9     3 13 7       4 11
8 14 12     16     13       11 10 1 2
13 2 15         1 6 9 3   7      
    1 16   6 7 8 14           13 10
2     4       9 1 11   8 12 15   13
15 3 16 2 9       4 6 1   14   5  
  1   11   4 3 15       5 13 7 2 9
11   10 1 8   12 6 7       5     3
6 8           5 10 16 12   1 14    
      12   11 10 13 8         1 6 16
14 11 3 9       2     4     8 7 15
1 6       3 9 10     8 12   13    
    7 8 3   5 11     16   10     12
  4   15   1         5 3   12 14 6
Showing puzzle number: 956
Puzzletype: Symmetrical Sudoku
Startnumbers: 136
Difficulty: Harder (0)
Solution methods: SiSo SC DC XW
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