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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.

791987 puzzles downloaded.

2   8 11 3 16 5         10 7   12 15
  7     15     8   12           2
3   9   11   7       13   16     10
    15             2 11     6    
8             7     16 1   12 6  
    7 14     16         12 3 11   13
            12       3          
  12     8 14       7   13        
        1   15       4 2     13  
          10       5            
10   14 12 6         3     1 16    
  3 16   14 5     10             7
    2     4 11             5    
14     6   8       1   3   15   12
15           1   9     6     16  
16 1   8 13         4 12 7 11 2   6
Showing puzzle number: 4244
Puzzletype: Symmetrical Sudoku
Startnumbers: 92
Difficulty: Very easy (0)
Solution methods: SiSo SC
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