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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.

404023 puzzles downloaded.

            16   7   10 2 13 6   5
11   13 9 7   12 2 4 3 16 1        
9 2   3 4   1   14 5 15     10 7  
1 16     13 3       10       8 6 14
4   1 16     14 3 10 8 12   15     6
          15 9 4 12     8   2    
    2 6 10 9       12 13   11     8
13 9 15   3 16                 4 1
8 1                 5 13   12 9 3
2     10   1 13       8 3 16 7    
    16   1     12 6 7 4          
7     4   10 8 15 11 6     1 14   13
3 4 12       2       14 9     8 15
  3 8     13 7 10   15   5 9   2 4
        14 11 5 9 13 4   6 7 15   2
12   9 7 8 6   5   14            
Showing puzzle number: 1142
Puzzletype: Symmetrical Sudoku
Startnumbers: 132
Difficulty: Harder (0)
Solution methods: SiSo SC DC XW
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