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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.

230642 puzzles downloaded.

14     16 4 7     1              
  2   5           7   6     11 14
5     14           10 2 12   16 1 13
  9             8     5   12    
  16 13     8 2       3   4     10
    10                          
    9     4 10         7     14 5
  14           11 2 15 1   10   13 12
1 11   3   14 9 7 4           8  
9 4     13         12 7     15    
                          6    
15     4   6       5 12     14 2  
    11   10     8             5  
3 10 8   11 5 16           7     1
7 5     8   4           16   6  
              13     5 8 1     15
Showing puzzle number: 10
Puzzletype: Symmetrical Sudoku
Startnumbers: 90
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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