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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.

718684 puzzles downloaded.

14 5 16     15         1       6  
13           3   5   7 16     14 15
  2   10 5 1     6   3 12   16   13
12   6       10         14 4      
      13   11   1   6 14 7 5 15    
  16           6   8     14     7
                        9   1 4
7         9   12                
                11   9         5
5 13   14                        
9     11     4   12           3  
    4 3 13 6 11   10   2   7      
      2 8         3       13   11
10   8   3 13   15     12 6 1   16  
3 11     9 10   4   7           6
  7       16         5     10 12 9
Showing puzzle number: 3700
Puzzletype: Symmetrical Sudoku
Startnumbers: 92
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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