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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.

950675 puzzles downloaded.

                    5 2     8 7
              13 16              
    14   2     1     8   9 6 4  
3     4 11 8 5   1 15            
  12     6           10         5
  1   5 8   13         3 6      
      6           12 2   7   11  
      13   11 7     14 15     12 16 4
7 15 11     1 14     10 16   13      
  9   12   4 10           2      
      3 7         1   14 16   15  
13         6           8     3  
            11 10   7 3 15 1     16
  2 1 10   14     6     5   13    
              2 14              
5 13     3 12                    
Showing puzzle number: 5308
Puzzletype: Symmetrical Sudoku
Startnumbers: 86
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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