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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.

      5 3 2       7 10     4    
7       6 16   14 3   9          
  3         11 9   13            
16   15 4             5     11   8
12   3       14   8   4   13      
5 6   8     15       14   10     4
    13 10         9   11 3     7  
  14         10     5     11 6 12  
  15 5 11     13     12         10  
  12     7 14   10         8 13    
13     9   8       2     15   6 11
      7   15   3   4       12   1
11   9     12             6 1   7
            9   16 10         8  
          7   13 6   12 4       15
    7     6 3       1 13 9      
Showing puzzle number: 842
Puzzletype: Symmetrical Sudoku
Startnumbers: 94
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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