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Sudoku puzzles diagonals (Su Doku)

My database includes 5816 puzzles for the moment and I'm constantly generating more.

Rules: Fill in the grid so that every row, every column, and every 4x4 box contains the digits 1 through 16. The diagonals must also contain 1 through 16. There is only 1 solution for each puzzle.

For more information check out Wikipedia.

917105 puzzles downloaded.

10     3 1   13 8 16 14   15     11  
15           6     7       14    
        11 4         2 12 15   10  
        2 14       3 9       1 13
    4 15   2               9   11
  12 5   3   1               7  
          5 12 13   9 16 1        
      7           8 5 14   6   12
13   1   8 11 3           12      
        6 1 10   11 5 14          
  14               4   2   1 16  
5   11               13   3 7    
6 13       3 14       4 8        
  3   16 12 13         7 5        
    7       16     10           14
  15     10   2 1 12 13   9 7     16
Showing puzzle number: 2535
Puzzletype: Symmetrical Sudoku
Startnumbers: 94
Difficulty: Very easy (0)
Solution methods: SiSo SC
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