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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.

375403 puzzles downloaded.

    16         13 9 6 3   15 4 1 14
14 11         12     7   16 10     8
4   11   15   5 14   3 13     12 8  
  3     4 1       16 8 10 7 15    
9 8   7               2 14     1
    8       3   14 10 5 13 16 2 6  
3 6 10 4 5   16   7   15 12   11    
  7 13       15 8       3 5     16
13     6 7       1 15       10 2  
    12   2 8   15   4   9 3 7 16 6
  14 9 15 3 2 11 1   5       16    
10     12 14               11   4 5
    5 13 16 6 4       10 7     3  
  5 3     4 6   8 2   14   1   12
15     9 11   1     12         14 13
1 10 4 16   7 14 6 11         9    
Showing puzzle number: 853
Puzzletype: Symmetrical Sudoku
Startnumbers: 130
Difficulty: Harder (0)
Solution methods: SiSo SC DC XW
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