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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.

725375 puzzles downloaded.

9 15     1       4 8   6 14 12  
      5   3 6                
6             12   15 9   10   13
15   8   10 1   2 9   6 3     12
  9 4   3 8   11         5 1  
12   5     6         10   8 7  
1       2         6 12     10  
        12   9   13   15        
  14     9 10         7       6
  4 1   8         2     12   5
  6 7         8   10 4   3 15  
3     12 13   14 4   9 11   6   7
2   3   7 4   13             10
                7 3   1      
  11 10 4   9 5       3     13 15
Showing puzzle number: 6400
Puzzletype: Symmetrical Sudoku
Startnumbers: 92
Difficulty: Very easy (0)
Solution methods: SiSo SC
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