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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.

14 8     2         9       10 12 3
3         14 8 9   6 15     13 5 16
    11 2 5 9       15 8   14 6 3  
  16   13   12     6 1 11 7 15     10
        15     1   4 14 8 9 7   5
8     14   15 10     12   2 6 9 11 7
  15 8       9   13   12     14    
7 14 6 5   13   16 12     9 3   2  
  4   6 1     10 5   3   8 2 16 15
    10     2   6   13       16 9  
2 7 4 1 10   6     3 9   13     14
10   5 3 7 8 12   16     6        
11     10 12 6 15 14     16   2   7  
  6 12 8   10 13       2 15 7 1    
6 12 15     5 16   2 14 10         4
16 1 2       11         3     13 6
Showing puzzle number: 40
Puzzletype: Symmetrical Sudoku
Startnumbers: 136
Difficulty: Harder (0)
Solution methods: SiSo SC XW
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