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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.

399558 puzzles downloaded.

12 4   5 6       16 2           15
    14   12 3   11 13 8 4   15 16    
5 13       8 2   14 4 7     12 3  
  16 12   3               6   7 13
      14 8 1 15   11 13   4     5 7
1       16 11 8 12 5   10   13 6 9 3
4     12       16 3 1       13 15 11
10         7 16   6 5 9       8  
  7       9 14 4   3 1         5
15 14 10       1 8 9       5     2
3 8 2 4   13   7 10 16 5 1       14
13 12     1   4 5   11 3 9 2      
6 3   2               10   7 4  
  2 5     12 6 13   10 14       11 9
    7 1   15 5 6 12   13 16   10    
11           10 9       5 1   14 8
Showing puzzle number: 2734
Puzzletype: Symmetrical Sudoku
Startnumbers: 132
Difficulty: Hard (0)
Solution methods: SiSo SC DC
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