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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.

667750 puzzles downloaded.

      6 5       1 16   8       14
        4       14             15
  10   12 14 15 16       11   4   5  
        10 2       4   5     13  
    10                     12 16 9
  7 2 9 12   5 10 13     16   1    
        6 9 8             14   13
5           13   4 9 12   3 11 7  
  16 14 1   8 9 2   6           10
10   4             15 7 14        
    9   13     5 8 2   11 14 7 1  
12 13 8                     16    
  4     9   11       2 12        
  3   15   5       10 4 6 16   12  
1             12       9        
13       7   10 16       1 11      
Showing puzzle number: 2236
Puzzletype: Symmetrical Sudoku
Startnumbers: 96
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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