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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.

1142587 puzzles downloaded.

13   5   1 11                    
      7 5 14 10             6   13
3 11 14 12 16   13 4   6         8 2
        6 15           13       7
  13   9 10   7         11        
11           2           14   3  
12   8   9   6 1     13 15 5 10    
  10 6       4   7              
              16   9       2 15  
    11 5 12 6     10 7   1   13   9
  1   3           12           16
        3         13   16 12   1  
15       7           12 9        
7 3         5   14 1   8 10 9 2 12
1   9             2 10 7 15      
                    15 5   7   1
Showing puzzle number: 4630
Puzzletype: Symmetrical Sudoku
Startnumbers: 92
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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