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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.

709993 puzzles downloaded.

6             11     2 10     3
2           14   15 12   6 13 8 7
8     11       6   2   14 9 12  
      12   14 7         2 15   4
    6   7 2 9 5              
3     15 11 12     8   13     10  
12     1     4         8   11  
  5 11                   3 13  
  10   13         6     7     12
  11     9   13     5 4 12     8
              9 3 11 6   1    
15   4 2         14 10   3      
  12 13 9   8   2       15     14
11 2 14 10   3 1   12           13
7     8 5     10             1
Showing puzzle number: 2812
Puzzletype: Symmetrical Sudoku
Startnumbers: 90
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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