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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.

941045 puzzles downloaded.

  5         12 15 13   8   11   4
  6 14   4         9 7        
13     3   1     4 5 9 2 15    
15 14   7 5     10 12     11      
    4         5   13 14   3    
3     11   14 7   9     5      
5     14 9 6       8          
  10       12       1       5  
          10       3 4 13     11
      13     3   6 11   14     2
    5   1 15   2         7    
      2     13 1     12 15   4 6
    11 1 15 5 6     12   8     7
        3 13         1   14 12  
10   2   12   15 7 1         11  
Showing puzzle number: 5877
Puzzletype: Symmetrical Sudoku
Startnumbers: 90
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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