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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.

    5 3 14   1   9   2 10 12    
9     15   12 6   5       1 14 7
    1 13 6       7 14 4     9  
  1 6   4   3         8      
15   2       7 8         14 3  
          5   10   13 12        
    15 5   9   6           12  
    3   11           10   15    
  2           15   10   4 5    
        13 4   3   6          
  8 12         5 15       6   10
      2         1   8   7 13  
  15     3 6 14       13 9 4    
11 4 9       5   10 8   1     12
    7 1 12   9   11   6 5 10    
Showing puzzle number: 3470
Puzzletype: Symmetrical Sudoku
Startnumbers: 90
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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