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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.

889515 puzzles downloaded.

      13   10 3     4          
    3       8   7     1   4  
8 12           5   14     15 3 13
    9 12   11 2   5           15
    11   2 8     14     4 12    
4 15 5 1   3 10     12       9  
3   1   15     7 12 10 14 6 8    
        11 2       8 15        
    8 5 4 14 15 3     12   2   1
  11       6     8 5   10 9 15 7
    4 14     11     2 13   1    
10           13   1 15   8 3    
2 1 13     15   11           7 9
  6   11     14   4       13    
          12     13 1   11      
Showing puzzle number: 303
Puzzletype: Symmetrical Sudoku
Startnumbers: 94
Difficulty: Super easy (0)
Solution methods: SiSo
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