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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.

759052 puzzles downloaded.

3 1 15 2 4 7   14   10   16        
  16 12     3           7 4 5    
        9 12 8 1 11   6          
    4 10   5     3       9      
11 9         3   14              
      5 13   7           16      
  7                 2   13 10 8  
13     15 2 10 12       9         5
15         14       11 3 8 6     13
  2 7 8   13                 5  
      14           2   9 12      
              12   15         9 8
      16       8     1   2 14    
          16   6 7 5 10 11        
    3 1 12           15     11 6  
        3   10   6   4 12 5 13 7 9
Showing puzzle number: 216
Puzzletype: Symmetrical Sudoku
Startnumbers: 92
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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