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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.

904599 puzzles downloaded.

      7 15 1     11 14          
1   2   13   12     4 11     14  
  8   14             9     15  
    13 4   11 10         12     9
    12     5   7     15 6 2 10  
  10 1   5 14 9         4 13 11  
      5 9   3     13     11    
14   15                   1   10
    8     10     9   5 2      
  12 9 13         1 2 8   4 3  
  1 6 3 7     9   12     10    
2     8         3 5   14 12    
  15     4             11   2  
  9     8 4     10   12   14   15
          15 7     8 1 5      
Showing puzzle number: 6711
Puzzletype: Symmetrical Sudoku
Startnumbers: 88
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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