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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.

927984 puzzles downloaded.

      4 7           10 5   15    
    11             4 7     14 5  
5 7     14   11 2 15 1 16   12      
    15             9 6 8     7 2
13     8         12 2           4
  15   9       8         10 12    
2     12 13   3 6   15 14   1      
4 14 6                     16    
    8                     6 12 7
      7   15 2   16 6   13 9     8
    5 13         3       14   1  
6           9 4         13     5
15 9     11 6 14             1    
      11   13 8 7 4 16   9     14 3
  13 10     9 5             2    
    7   10 16           15 6      
Showing puzzle number: 5075
Puzzletype: Symmetrical Sudoku
Startnumbers: 94
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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