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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.

1153565 puzzles downloaded.

      11     8       6   7   13  
        9 12 2     10     14      
6         14             16 3 5  
    5 4 11   6   14 2 15       8 9
    1         6   14   13 5 10 2  
    3         9       6     12 13
8   10 2 5   3   9     4        
              2     8 10        
        14 8     15              
        15     16   9   1 3 5   12
5 15     12       4         6    
  12 14 9 7   10   8         13    
11 5       10 15 8   16   2 12 7    
  6 4 1             3         8
      12     16     4 9 14        
  3   16   7       13     1      
Showing puzzle number: 854
Puzzletype: Symmetrical Sudoku
Startnumbers: 92
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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