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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.

    15   6 8 11 4 12 5       10   9
7     1   16   3 13 10   6       15
      9 11 13 2 1 15   4 7   5   3
    2 13   12     3 16   1   11    
    14     3 7 15       4     13  
4 13   11 7 6           3   2 15 1
  3 10 12     14 6     15       11 4
    11 6 15 4 13 14   1 7   9     5
2     5   10 3   11 14 13 16 4 15    
13 8       1     5 15     7 4 16  
15 6 13   2           8 11 16   12 14
  2     9       14 7 5     13    
    5   14   10 13     9   11 12    
11   9   13 14   10 7 12 3 15 5      
9       16   15 2 8   6   10     13
12   4       9 7 10 6 16 14   3    
Showing puzzle number: 1526
Puzzletype: Symmetrical Sudoku
Startnumbers: 134
Difficulty: Harder (0)
Solution methods: SiSo SC DC XW
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