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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.

  15 9   6 8         14       16  
4 6           2 1         15    
      3 9 4 13 15 2 5            
1 12 13     11   3       15 9     10
15 11 6     2 12             9   5
  9     3 15 4 6             10  
8 3       10           4       12
  7           11 12   6 3        
        1 12   14 13           7  
7       10           8       11 15
  13             11 4 5 6     9  
9   5             7 3     13 4 1
11     7 14       16   15     10 12 6
            15 10 6 1 12 8 11      
    4         12 10           14 9
  16       6         11 5   1 13  
Showing puzzle number: 4668
Puzzletype: Symmetrical Sudoku
Startnumbers: 98
Difficulty: Super easy (0)
Solution methods: SiSo
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