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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.

1112982 puzzles downloaded.

      6   11         16     14   3
    7         14   10 8 15        
        16 1     11             10
14   16   9     7 5 6            
  7     15 10 2         12   8    
13 2   12 8       1   5       14  
    11 16   6 14   10       12     2
4     14 12       2   9   7   1  
  14   2   8   13       1 11     6
12     1       15   2 14   9 4    
  11       9   1       7 16   3 14
    6   10         11 12 4     8  
            13 10 6     2   7   16
11             6     1 9        
        5 4 15   7         11    
6   12     2         11   15      
Showing puzzle number: 4551
Puzzletype: Symmetrical Sudoku
Startnumbers: 94
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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