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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.

738571 puzzles downloaded.

13 6 14       9 11   3     15    
4     8   1   2       7 11    
2     11     5     4       1  
      12 6 5 15           7    
1     5   7   4 9   2     12  
9       4 12 3       14       13
11 12   6 7 15 8             14 5
    5                   1    
10 2             3 11 15 12   6 7
7       8       6 9 1       2
  15     13   12 10   7   5     3
    9           8 5 10 14      
  3       2     5     15     1
    7 1       9   14   6     8
    8     11   3 13       5 10 9
Showing puzzle number: 10224
Puzzletype: Symmetrical Sudoku
Startnumbers: 90
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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