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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.

9 10     6 3 11   15   8     7 1
3         10       7     9    
13   15   4       9 14 6   11    
          9     10            
  5 9   1   14 3     11 4 10    
          4 2       14   5    
  8   12       14     2 1 13    
      3 11 8 7   13 9 15 6      
    1 9 15     6       7   14  
    2   3       8 6          
    8 5 7     10 14   13   2 12  
            15     11          
    3   8 7 1       9   12   10
    14     11       10         13
2 9     10   13   5 8 1     15 3
Showing puzzle number: 6506
Puzzletype: Symmetrical Sudoku
Startnumbers: 88
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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