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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.

656296 puzzles downloaded.

  9             4   8   10    
  2       14     13 9 4       1
    10   4 5 3 15       6     12
7   8 5         15 12     9   11
  13   11   3   9 10       6 15  
9 10     3 11                 8
        9   5     3 10   14    
  7 2 3     11   6     12 13 5  
    1   10 8     9   11        
12                 14 6     10 13
  14 6       9 5   2   1   12  
1   7     4 13         8 2   14
5     4       12 1 15 14   7    
10       6 9 4     5       2  
    13   2   7             11  
Showing puzzle number: 3278
Puzzletype: Symmetrical Sudoku
Startnumbers: 90
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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