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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.

368589 puzzles downloaded.

3 11   2 4     16 13 5 6 7   9   12
16     4 7 2 5 14 8   15 3     12  
  1 6   9 5     2             7
2 13 14         3   12   6 11   1  
13   16   3 6     15 7 4     10   2
  5   1   15 8   3 13 7   2 14    
  4   5       7 11   12   10 1 15  
4 7       10 1 12 6   14 8        
        11 13   6 5 4 16       9 3
  2 8 16   12   4 1       9   11  
    13 6   9 15 10   16 1   7   2  
15   3     7 16 13     9 12   11   10
  12   14 6   11   7         4 3 1
11             1     8 9   2 13  
  15     1 11   5 16 8 10 14 3     4
12   11   16 1 9 2 4     5 6   8 14
Showing puzzle number: 385
Puzzletype: Symmetrical Sudoku
Startnumbers: 138
Difficulty: Harder (0)
Solution methods: SiSo SC DC XW
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