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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.

6 12     11     5 4 7   10     9  
  15           6   16           3
5   3     4 2           10   13 1
  13         7   12   2   16 8    
  11 5     16   4     1          
        10         8     4     5
  2         12 11   4   13        
12 3 14           2       15   10 13
10 8   12       14           5 3 16
        16   11   8 1         12  
3     15     1         6        
          3     10   4     6 15  
    9 1   2   13   14         16  
2 14   6           15 12     10   7
11           14   1           4  
  16     7   4 3 6     11     14 9
Showing puzzle number: 3144
Puzzletype: Symmetrical Sudoku
Startnumbers: 92
Difficulty: Hard (0)
Solution methods: SiSo SC SB DC
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