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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.

  5   3 6   14             4  
    8 9 10 13   7 5         11 12
      4 7         12     9 14  
4   14         8   3       6 7
10 9     13 1     6     4   2  
          4   5     11        
1 10   15 8   7 2         5    
      7 2   3   15   6 12      
    6         14 9   10 2   7 1
        12     13   2          
  11   10     1     7 8     12 5
8 2       11   12         7   9
  6 11     2         1 13      
3 1         13 4   15 7 9 12    
  13             3   2 8   5  
Showing puzzle number: 3500
Puzzletype: Symmetrical Sudoku
Startnumbers: 88
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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