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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.

1078601 puzzles downloaded.

1     15 5     10       14       11
          3 6   2     9 13     1
16   14   13       1 4   10 5 12    
3 8             7 16       14 9  
  11 8 5   14   7       1 15 6 12  
  1     15 9 10       4 11        
13   9     4     8   5   14 11   3
            11 8                
                5 1            
10   3 8   7   6     13     16   14
        3 13       7 12 8     2  
  16 11 13 9       15   14   6 3 5  
  13 15       4 12             14 8
    16 9 11   13 5       12   7   2
4     11 8     3   13 7          
14       7       4     3 1     13
Showing puzzle number: 5454
Puzzletype: Symmetrical Sudoku
Startnumbers: 102
Difficulty: Super easy (0)
Solution methods: SiSo
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