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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.

855742 puzzles downloaded.

11 1   5   4           6     8  
15   7 10         4         6    
4       10     6   1 5 2     11  
  6 9       2 15 16   8       5 4
9               12   15 10        
  8       13         7   9   10  
    6 16 1   15   3   9     7    
5   12       8 10       1   16    
    15   12       2 11       3   8
    11     5   4   12   13 14 2    
  3   12   16         6       7  
        8 11   3               12
1 11       12   9 7 5       8 3  
  7     13 3 10   9     4       14
    3         1         2 15   7
  9     6           16   10   13 5
Showing puzzle number: 5815
Puzzletype: Symmetrical Sudoku
Startnumbers: 96
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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