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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.

865226 puzzles downloaded.

        7 3       11     6   14
14                       12 5 1
  12 9       1 4 8   10 2   11 15
  11   9   12     14   1     6  
          8 11   2   9 10     4
  13 10   1 7         14       12
7   15 3 9               1   6
      1   9 10   15 2   8      
8   6               5 15 4   10
1       4         10 3   13 8  
3     6 11   14   4 8          
  15     10   6     1   14   4  
9 14   11 5   7 3 6       15 12  
12 1 3                       5
2   13     1       12 7        
Showing puzzle number: 12312
Puzzletype: Symmetrical Sudoku
Startnumbers: 90
Difficulty: Very easy (0)
Solution methods: SiSo SC
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