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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.

11   6 12     1 7 8 15   9 14 3 5  
8 10   9   1     14 16 3         5
16   3   11 14     15     5   4    
15     13 3     12 5       11 2    
10 11         16     14     1 7 6  
      8 16 7 3     9 10 14 6 15    
    4     8 10         13 5 14 12 16
4 7 16 1     2 9   8 5 6     10 14
3 5     7 2 11   4 13     9 1 15 10
9 1 13 2 15         11 4     5    
    7 10 14 12 8     5 1 16 4      
  4 12 16     6     2         9 1
    11 3       14 10     7 2     8
    14   8     4     16 2   9   11
2         4 12 15     6   13   8 9
  3 9 15 1   5 2 12 4     16 8   7
Showing puzzle number: 2141
Puzzletype: Symmetrical Sudoku
Startnumbers: 136
Difficulty: Harder (0)
Solution methods: SiSo SC DC XW
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