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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.

374664 puzzles downloaded.

  10       5   15           14 9 13
  9   7 15   14 12     3   8 10   4
11 7 5   10   1     2   3       6
16     13   3       14 4 1 7     2
9   11     8         15 16 2 4 10  
5   8       3   6 7 14 13   15 1 9
    15 9     5 13   12 7 14     4  
  13         16   1 9 8     5 3 7
15 11 3     1 7 2   16         14  
  8     13 16 15   11 1     14 7    
12 16 9   8 10 2 7   4       6   5
  1 4 5 3 7         11     16   10
10     16 11 4 12       9   6     1
1       16   8     11   6   12 7 14
13   6 14   9     5 15   11 12   8  
4 2 14           8   13       11  
Showing puzzle number: 1310
Puzzletype: Symmetrical Sudoku
Startnumbers: 130
Difficulty: Hard (0)
Solution methods: SiSo SC DC
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