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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.

955063 puzzles downloaded.

        5     8         7 10  
2   6 9 1   12     7 13 8 5   11
  10   11 14   5     13     3    
15       10         9       13 5
  5 3 4       13 6            
  9   7 8 10 11 5     4   1 3  
                7 6 1 11     4
  7       11 3   13 12       9  
10     13 11 9 15                
  6 12   7     11 9 1 15 3   2  
            7 15       12 14 4  
11 3       14         8       7
    15     12     14   5 13   8  
14   1 5 6 13     15   9 10 4   2
  4 8         10     3        
Showing puzzle number: 11824
Puzzletype: Symmetrical Sudoku
Startnumbers: 94
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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