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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.

738654 puzzles downloaded.

14         10       1 15   4 5  
              6   8 1 11     14
  7 10   3   4         6 2    
  10       15 11         8     4
5 2 14     4   13 6   9        
9     11         1 5   2   15 3
  3   2   7       15 10 4      
10 12   6       2       13   1 5
      5 13 1       4   14   3  
13 15   8   11 1         12     10
        11   2 14   13     3 8 15
3     4         10 7       11  
    11 7         15   14   6 2  
15     13 6 8   4              
  5 9   10 6       11         13
Showing puzzle number: 10544
Puzzletype: Symmetrical Sudoku
Startnumbers: 91
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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