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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.

      13   15 14   1           7 12
  3       7 10       5   6      
      7 13   6 3 14 4 9     10    
              5   10   8   14    
10     16 7         15       2 12  
1   3     6         2 10        
  7       1 2     14     5     10
6   9   14 5       13 16     15    
    7     16 12       3 6   1   14
3     10     7     9 15       16  
        1 3         13     8   9
  6 16       15         12 13     11
    5   12   1   10              
    1     8 16 4 13 12   2 9      
      2   14       16 1       8  
4 8           15   5 14   7      
Showing puzzle number: 931
Puzzletype: Symmetrical Sudoku
Startnumbers: 94
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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