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Sudoku puzzles irregular (Su Doku)

My database includes 15 puzzles for the moment and I'm constantly generating more.

Rules: Fill in the grid so that every row, every column, and every box contains the digits 1 through 16. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

230090 puzzles downloaded.

7   11     12   6   10         9  
        4 1     16       11   10  
15     8           3     12 13 2 1
    10 12 8 3     7   6 14       4
    13   7 11   3     9   16      
    8 3 2 6           10 7   12  
      10   2         12 3 1 15   7
10   1     16       9 11 4     8 6
12 13     6 7 14       1     9   5
6   15 1 5 8         14   10      
  7   9 14           8 13 6 5    
      11   4     5   10 2   12    
8       1 13   15     5 9 14 2    
14 6 7 5     2           9     16
  15   13       12     16 6        
  10         13   1   7     8   15
Showing puzzle number: 3
Puzzletype: Symmetrical Sudoku
Startnumbers: 108
Difficulty: Super easy (0)
Solution methods: SiSo
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