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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.

562912 puzzles downloaded.

13     16 4             8 5      
                3 1     13 4 8 2
    3 5     11 1   16 14       7  
4 6           3       12   11 14 16
11 2       3     12 9   5     15 14
  12   4         15 8            
    10       5 11     6   7   1 12
14   6   15                   13  
  4                   14   12   11
3 15   11   8     5 2       7    
            15 5         2   6  
6 8     16   10 12     15       9 5
7 13 15   3       1           5 4
  3       15 2   13 12     9 16    
8 10 16 6     4 13                
      2 12             3 8     1
Showing puzzle number: 1856
Puzzletype: Symmetrical Sudoku
Startnumbers: 96
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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