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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.

      4     6     11 8     9  
13   8     14   10 15   1 3   11  
15   2   1 8   9     5   14 10  
                  13 9   8    
11     7     15 5           12  
    12   2       9 7 14   4 15 5
  4               8     3 1  
7   1       10   5       11   8
  5 3     12               7  
14 1 4   5 6 13       7   10    
  8           15 2     14     3
    11   6 3                  
  12 6   4     2   5 11   15   14
  9   8 7   14 11   3     2   6
  2     10 4     13     8      
Showing puzzle number: 4965
Puzzletype: Symmetrical Sudoku
Startnumbers: 88
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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