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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.

901041 puzzles downloaded.

4         11         1 10 15   12
            10   2     4 11   14
    14 10 7 13       1 8     6 3
    6 13         4 15 12 11      
  4       6   14     2     9 5
10 15     9 1   2 7   6   4    
            1     3   14     15
  12   2 15   4   14   13 6   11  
6     14   15     5            
    12   5   6 13   7 4     3 9
14 7     11     12   9       2  
      9 10 14 2         7 12    
5 10     12 3       2 11 8 6    
9   11 3     8   10            
7   2 8 14         12         4
Showing puzzle number: 9625
Puzzletype: Symmetrical Sudoku
Startnumbers: 94
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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