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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.

      1     14 2 5 11   4     6
    11       12   15 4       7  
  15     13       7   11 1      
10 13   4         9 1     11 15  
    9       2         6     10
1 3 8 12       4     9   2 14  
  11 14   10         5 15 3      
5         3       10         9
      7 3 11         10   8 4  
  6 10   12     13       2 3 9 4
4     15         6       13    
  8 13     7 4         15   5 1
      10 6   7       12     8  
  7       4 3   11       1    
13     8   2 15 10 1     7      
Showing puzzle number: 12365
Puzzletype: Symmetrical Sudoku
Startnumbers: 88
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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