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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.

247600 puzzles downloaded.

  11     4       12              
13 7       10   8     16 6     4  
1   6         5   9 8          
    4 5           12   7 15   9 13
14 3       2           10        
  6 14     4       3 12 1   13 5 2
  16 1   7   5           4 3 12  
        3   7     8       5    
    15       3     10   9        
  15 9 16           7   8   10 14  
5 4 3   14 16 15       10     9 7  
        11           6       13 1
11 1   3 2   14           16 12    
          8 1   13         16   14
  10     12 1     6   4       3 15
              3       2     10  
Showing puzzle number: 7
Puzzletype: Symmetrical Sudoku
Startnumbers: 92
Difficulty: Harder (0)
Solution methods: SiSo SC SB DC XW
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