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Sudoku puzzles (Su Doku)

My database includes 12449 puzzles for the moment and I'm constantly generating more.

Rules: Fill in the grid so that every row, every column, and every 3x5 box contains the digits 1 through 15. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

955063 puzzles downloaded.

6 7     15   1     5 14        
  14 2 9             3 1 8    
8               14 7   13 6    
13       5   15 1 9         3  
  8 11     7           14   10  
          11     2   12   13    
  3   15   5   7     6   9    
    7     13 12   4 6     14    
    6   2     11   8   3   12  
    8   11   4     15          
  15   13           9     11 2  
  5         3 10 1   4       7
    4 11   1 9               10
    9 12 10             11 3 4  
        8 12     5   13     14 2
Showing puzzle number: 5595
Puzzletype: Symmetrical Sudoku
Startnumbers: 82
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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