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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.

          2   4   12 14        
    6 9 12 7   14 1         13  
  14 7           8 15     9   10
    2       14   9 6 7 11      
12 7 14   8     13   1   6     2
        9 12       4 1       3
  10               5   4 7 3 13
  3   14     8 12 4     15   1  
1 4 11 8   15               9  
3       1 5       2 11        
2     6   10   11     15   3 4 9
      10 15 1 6   12       8    
15   8     14 1           4 10  
  13         15 10   9 12 8 11    
        11 4   5   8          
Showing puzzle number: 11857
Puzzletype: Symmetrical Sudoku
Startnumbers: 91
Difficulty: Very easy (0)
Solution methods: SiSo SC
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