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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.

1142643 puzzles downloaded.

5   9     13   4 10       14   12  
    11   14         4 2   9     10
    4     7     3     16 8 2   5
      14 1   9 3           11    
    1     3 14 10   15     7     2
  4               1   13 16 8 3  
    2             3   11       6
    3 16 9               11      
      11               8 13 9    
10       4   13             14    
  1 16 2 7   5               6  
15     3     6   1 9 5     4    
    13           11 10   3 2      
8   5 10 16     2     7     6    
2     15   14 3         1   13    
  11   4       13 5   14     10   9
Showing puzzle number: 5228
Puzzletype: Symmetrical Sudoku
Startnumbers: 92
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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