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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.

672900 puzzles downloaded.

5 11 14 13   4       6 10     9  
3         13 5   9   7   1    
  2   15 10 12       14   5      
7                     12 4    
8   12 11 3 9   15 5     10      
10 1       6 14         11 15   9
14       15   2   12 1         7
    1     7   14   3     8    
13         5 6   15   2       14
15   3 14         4 12       8 5
      8     13 9   7 1 2 14   12
    9 7                     6
      5   8       13 6 9   2  
    10   4   12   6 15         3
  3     8 1       9   4 5 14 15
Showing puzzle number: 10449
Puzzletype: Symmetrical Sudoku
Startnumbers: 93
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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