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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.

        8 13 1     15         9 4
    1       4     9 11          
    11 9 6         10   4 12   13  
4 16       9 10 7   6   13        
  15             6   13   8   12  
  8 3     10       5     6     13
  5     13       11 14   12 10      
6 12     15           4 10        
        3 4           16     15 10
      2 9   15 6       7     14  
11     16     5       2     13 1  
  3   6   11   10             2  
        5   14   15 4 12       3 16
  4   3 1   11         6 13 8    
          7 12     3       6    
1 6         3     13 7 11        
Showing puzzle number: 1154
Puzzletype: Symmetrical Sudoku
Startnumbers: 92
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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