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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.

7 10 5   3       4     13       2
    4 16 7 15 10 11 6   2   3 12    
      5 11   14 4 9 8 16 3       15
14 12       10 4 9 8     5   7 15  
  6 15     12           10   2 11 16
8 14       9 1 10       15       6
16 7   11   5 8 2   1 4 12   6    
12   13 14   1 16 8 5         9   10
9   10         12 16 13 6   7 4   5
    11   5 7 13   10 16 9   4   6 12
4       10       7 5 15       3 9
3 2 12   14           10     11 16  
  16 1   13     6 3 10 14       7 8
13       8 3 7 1 12 14   6 5      
    8 4   6   13 1 2 12 7 14 10    
10       12     16       11   13 14 7
Showing puzzle number: 389
Puzzletype: Symmetrical Sudoku
Startnumbers: 136
Difficulty: Hard (0)
Solution methods: SiSo SC DC
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