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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.

1151017 puzzles downloaded.

        1 15   2           14    
          4   14   10     3 5 13  
    10 12 3         2         9  
                    4 15 7      
1   6             9     2   4 11
    13   10 1   5 7     6 14      
  9 12     6 4           5 13 10  
    2   13 9     4   15   12   16  
  1   7   13   15     6 12   4    
  5 16 2           15 3     11 6  
      9 16     11 13   7 1   10    
15 11   14     1             3   13
      3 9 7                    
  2         11         9 8 16    
  14 7 1     8   11   12          
    15           2   16 7        
Showing puzzle number: 4792
Puzzletype: Symmetrical Sudoku
Startnumbers: 90
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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