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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.

938975 puzzles downloaded.

6 14           8 2     13 9 15  
        5 12   9 6   11   1    
8 2       13 15     11       6  
      11 10       5     6   7  
        6 7 4 1   15   11 13   10
          10         15       5
3   5         10   7 12 1     13
12   2         15         6   11
10     9 4 1   5         15   3
4       2         12          
5   7 1   3   4 13 14 2        
  15   12     10       5 14      
  5       15     3 9       1 14
    15   8   1 11   10 13        
  9 6 3     2 14           11 15
Showing puzzle number: 9510
Puzzletype: Symmetrical Sudoku
Startnumbers: 89
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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