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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.

824793 puzzles downloaded.

  11     15   10 6 3 13     2    
    7       5       11     6 9
  6 3     11     9 2     15   4
  9   11       8       15 6 1  
7   5   2   15 9   3     4    
                  1 12        
2 3     1       11 7     13    
4   15   7     12     14   1   5
    11     14 9       8     2 3
        10 5                  
    14     8   4 10   6   5   2
  13 9 8       7       10   12  
11   6     7 8     5     12 13  
10 8     14       15       7    
    12     6 13 10 1   9     8  
Showing puzzle number: 11304
Puzzletype: Symmetrical Sudoku
Startnumbers: 87
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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