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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.

1049881 puzzles downloaded.

10         14   8           3   1
5   3   15           12          
  8 16       7   3 4   11 12   9  
14   15     3 5     10 2     7    
          11       3   8     12  
        13 12       14           15
    10   14         2   9 16      
12 14 8   1   16         13   4    
    12   11         5   16   1 15 6
      6 5   3         10   11    
9           1       4 6        
  15     16   2       8          
    14     8 6     9 1     5   7
  11   4 9   14 2   8       15 16  
          10           2   9   4
15   1           7   13         3
Showing puzzle number: 4593
Puzzletype: Symmetrical Sudoku
Startnumbers: 88
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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