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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.

945406 puzzles downloaded.

  5   8   10 1       13       6
  14           2       3      
4   11 13 6       9     5      
  9   2 4     7   3 1       12
    10       5   4     7     15
  13   14 12           3   10    
    6 12 5 11   1   10       15 3
  10 4     13 9   15 8     6 1  
11 1       4   3   2 5 10 8    
    5   11           8 2   4  
9     4     8   13       11    
7       15 2   11     14 9   10  
      6     2       15 11 3   9
      7       8           12  
10       13       11 6   1   7  
Showing puzzle number: 4353
Puzzletype: Symmetrical Sudoku
Startnumbers: 88
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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