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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.

1139372 puzzles downloaded.

16   2     15   10     1   3   8  
    6               9 12   13   1
12 4     2       3   16 10 15      
3     13       11 5       4 16    
      14             15   16 10    
  15       10 5   12 1   16     3 13
        14                 1   6
4   13               8   9 2   15
13   12 1   8               14   4
7   14                 8        
9 3     13   11 15   14 7       2  
    10 15   2             8      
    9 2       1 13       14     8
      11 4 5   8       9     1 16
1   5   9 14               4    
  13   4   11     1   3     7   9
Showing puzzle number: 2882
Puzzletype: Symmetrical Sudoku
Startnumbers: 92
Difficulty: Harder (0)
Solution methods: SiSo SC SB DC XW
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