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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.

1111501 puzzles downloaded.

  8       14   15 2 3 13 5 10 12    
          8       9 16   3      
13   16         1     10   8      
      3         8 1 15   14 4    
      15 13       5 7   12   1    
16     5         6       7      
7 9         15 5       1   16   3
3               16     15 5 10 13  
  13 8 16 6     4               15
1   15   7       4 11         6 14
      12       8         16     13
    14   1   2 3       10 4      
    5 8   15 16 13         2      
      9   5     15         14   10
      14   2 3       11          
    3 13 4 1 8 6 14   9       11  
Showing puzzle number: 312
Puzzletype: Symmetrical Sudoku
Startnumbers: 94
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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