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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.

3 9         4       14     2    
2 16     10     1     12 3 13     11
  7   14         4     6 3      
        6   5   2 8   15   12    
  10       12 8       4 2 16 5    
            2   8       12 7    
1           7 13 10           2  
  2   3   4   11         1   8 13
9 8   16         5   6   11   13  
  14           7 15 10           8
    6 5       2   13            
    3 15 12 8       14 1       9  
    4   13   14 15   3   7        
      10 3     6         14   15  
15     7 11 2     6     10     12 3
    13     5       16         7 6
Showing puzzle number: 301
Puzzletype: Symmetrical Sudoku
Startnumbers: 94
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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