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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.

355622 puzzles downloaded.

  10 14 6 16       5   11 7 15 12 1 3
15 12 5   4 3   11 10           16 6
11     5   15 1     7 4 12 9 6 13 14
7   9 1     16   15   5 4 6     10
4       13 5         14 6     15  
3 5       1     16 14 6   11   12  
    6 9     14 8         1      
16     10   4 5 9 1 8     3 2 7  
  9 12 8     15 6 4 3 13   7     2
      15         11 10     13 4    
  4   7   8 11 1     16       3 9
  14     10 11         1 13       7
8     11 14 7   16   4     5 15   1
1 8 13 4 3 6 9     5 7   10     15
10 7           15 13   8 1   16 2 12
5 11 1 2 7 10   12       15 8 13 9  
Showing puzzle number: 861
Puzzletype: Symmetrical Sudoku
Startnumbers: 138
Difficulty: Harder (0)
Solution methods: SiSo SC DC XW
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