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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.

700204 puzzles downloaded.

9                         8 16  
          10       3     9   15 7
2   4   3 15       16 9 11        
            1   6     2        
8         3     11   7   10   6 14
    6   15   10       16 8     13 12
11 7     9   12 14   6       1 8 3
14 4 15 2   6 7     10 12   11 16    
    3 4   2 15     9 1   16 13 14 10
13 14 11       5   4 8   12     2 15
16 15     1 4       5   14   11    
6 1   8   14   10     3         5
        16     11   2            
        12 7 8       11 5   10   13
1 11   15     6       14          
  2 5                         1
Showing puzzle number: 619
Puzzletype: Symmetrical Sudoku
Startnumbers: 102
Difficulty: Super easy (0)
Solution methods: SiSo
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