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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.

851630 puzzles downloaded.

  4             13           6
  13   8       14     11     9  
9       2 11   10 5   15 3 13   8
13     1 7 4     9 10          
10     12         15 6     3   1
    15     5 8 7       4   13 9
    7 3     14   2   10   8   11
          15 7   10 9          
11   2   13   5   3     15 14    
12 9   13       4 8 7     5    
8   1     10 11         12     13
          9 1     13 8 11     2
7   13 10 3   9 2   12 5       15
  1     5     8       14   3  
14           13             6  
Showing puzzle number: 11973
Puzzletype: Symmetrical Sudoku
Startnumbers: 90
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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