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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.

325673 puzzles downloaded.

  16 14   3 5 9 10   2   7 11   8 12
      3 11 1     6 16 4 14     15 8
8   10 5       7 16 13         6 14
    5 6   4 12 15     2       16 1
11   1 10 15     16 12   9 4   5   7
  1 4 12     16     8         10  
5 15 7 13 16           12 8        
15 7 6   13         5   9 16 12   3
10   9 8 6   7         12   16 1 2
        5 15           11 10 2 3 4
  8         1     9     4 3 7  
6   15   7 12   4 8     13 14 11   9
4 2       11     3 12 7   1 10    
2 11         6 9 5       15 7   16
9 13     4 16 11 12     5 1 6      
12 4   7 8   5   2 3 10 6   15 9  
Showing puzzle number: 447
Puzzletype: Symmetrical Sudoku
Startnumbers: 136
Difficulty: Harder (0)
Solution methods: SiSo SC DC XW
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