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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.

810307 puzzles downloaded.

  13   1             6 8 11   5  
  15       10         5       3 4
        9 12 5         7   13   6
    8 5     15             12   2
    11   1     3       14   6 12  
    12 7     14   10   11 16   3 13  
  2     12   7             14 9  
  6     15 13 11         1       5
8       10         7 3 11     4  
  10 13             16   12     8  
  7 6   4 8   12   9     13 15    
  9 4   5       15     6   10    
5   15             11     9 4    
4   10   14         12 2 15        
9 1       11         7       14  
  11   13 3 5             12   15  
Showing puzzle number: 4455
Puzzletype: Symmetrical Sudoku
Startnumbers: 94
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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