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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.

878402 puzzles downloaded.

  1 11         4           10 8 15
5           1     6   7        
15     6       10   4 16   3      
  9 8       11     15   14 5 16 12 2
  12 6 15 8                   1 10
        1 9     13   6 5        
  8   10           16     11 6    
      14             7 8   4 5  
  3 9   4 13             15      
    15 2     12           8   3  
        11 14   16     5 15        
10 16                   11 4 12 6  
8 15 10 7 9   16     5       3 14  
      9   6 3   12       7     5
        2   4     11           8
1 4 14           7         2 11  
Showing puzzle number: 3565
Puzzletype: Symmetrical Sudoku
Startnumbers: 92
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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