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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.

12     15   1         7 13 2     16
    13     4   15 8   14          
      14 13     16 11 2       4 8 15
11 8   16 10   3             12    
  6 4   8       7   10   11 16    
          11 10 14   3     7 9   8
                      8        
  9   1   6 4     13            
            1     4 6   14   5  
        16                      
1   5 7     15   16 12 9          
    15 13   14   11       5   10 16  
    7             9   2 6   3 12
13 12 10       6 1 14     4 8      
          2   9 12   1     11    
6     8 5 15         3   9     4
Showing puzzle number: 5462
Puzzletype: Symmetrical Sudoku
Startnumbers: 92
Difficulty: Very easy (0)
Solution methods: SiSo SC
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