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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.

658452 puzzles downloaded.

  14           1   8   2 9 3 6
    1     3 6 2         10    
  2 3   7       14   8        
  8 14         9 4     3 5   1
    11   13   8     1 9 14      
5   9             14   15 7    
12       14   5 11   6   13     2
4             3             11
6     5   13   7 9   4       3
    4 14   7             1   10
      7 10 8     1   2   3    
15   2 1     12 10         6 11  
        4   7       10   12 2  
    13         14 15 2     4    
2 11 10 9   1   4           15  
Showing puzzle number: 4519
Puzzletype: Symmetrical Sudoku
Startnumbers: 87
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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