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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.

607293 puzzles downloaded.

12   1 5   11     6   13       4
  3     15   1 8   12         9
    9 4           14 3   12   15
11 13   12   10           4 6   1
  7     10   9                
3           8 13   6 7 11     14
    5   3   11   13 9          
9 15     4 1       7 8     10 5
          6 10   15   4   9    
10     8 9 5   3 11           2
                2   10     14  
2   12 3           10   1   7 13
4   2   12 7           3 15    
15         14   12 5   6     4  
1       7   15     11   12 14   10
Showing puzzle number: 10438
Puzzletype: Symmetrical Sudoku
Startnumbers: 90
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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