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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.

1140029 puzzles downloaded.

6 10 1     14 12       16   8      
  3 12   8 16       13     4 5 9 14
2             5   3     13 10    
  13   8     4     7            
13     7       8 3     14 9   1  
14     5 7         12       4    
            13 14 7   9       12  
4               13 1   15     8  
  4     5   3 12               2
  2       8   7 6 5            
    7       14         11 12     1
  14   12 16     1 10       3     8
            9     10     14   16  
    5 6     8   12             4
10 7 14 4     6       1 3   11 2  
      1   7       16 2     13 6 12
Showing puzzle number: 2171
Puzzletype: Symmetrical Sudoku
Startnumbers: 94
Difficulty: Very easy (0)
Solution methods: SiSo SC
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