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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.

      10       9 12         7    
  12                 15 5 3 11    
8   2 3     16   14 13         10 5
      5               16   13    
11   6     12     5   8   10 4 1  
16 2       1         10   6   13 7
      12     13 7     9   16 8    
  5 7     4 11         13        
        8         4 14     1 3  
    9 16   14     1 15     8      
2 8   1   3         11       12 16
  6 14 15   13   11     16     2   4
    10   11               14      
4 16         15 14   6     12 10   8
    3 9 7 6                 4  
    12         5 9       11      
Showing puzzle number: 4669
Puzzletype: Symmetrical Sudoku
Startnumbers: 92
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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