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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.

1153565 puzzles downloaded.

16 1   13     8 15 5 3 14       10  
    14   16     7     9 11        
          9     7 13       14   3
      10 4 3 11       1          
    6     4 3         9     7  
    12       10       4   6   3 16
  5     14   15       2 7        
14   2     7 6     11     8   15 13
11 16   6     14     7 5     3   4
        12 13       4   10     16  
1 7   12   5       16       8    
  4     3         8 12     10    
          14       6 15 1 5      
10   16       9 4     11          
        15 6     3     12   1    
  6       11 2 5 16 10     3   4 9
Showing puzzle number: 5802
Puzzletype: Symmetrical Sudoku
Startnumbers: 96
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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