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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.

637579 puzzles downloaded.

8         13       10   3   9    
  2 3       8 12 15       10 1    
        15       2   11 16     14  
    12   6     10     14   16 3    
11           7   1   16   12   9  
13 12 16     4     3     14     1  
  7 14               8 10 5   4  
6         10     4       7 16   3
5   15 12       13     1         10
  9   2 5 7               14 12  
  3     16     15     10     7 13 9
  8   11   9   4   6           1
    9 3   8     16     11   4    
  6     2 15   1       5        
    11 14       5 13 1       8 6  
    10   14   16       12         5
Showing puzzle number: 4463
Puzzletype: Symmetrical Sudoku
Startnumbers: 96
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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