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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.

1137702 puzzles downloaded.

    3     10 15                 13
10   13 16 12   6                 7
      14   13     8 1 6 12 11      
      4 8 7 11 14 15 10           12
3         2     5 15 13         10
9 5 1   15 3 13             6   14
    15   6     5                
  2 16             6 10     1    
    9     8 1             11 16  
                3     15   9    
7   11             4 1 9   5 3 8
8         16 7 4     12         6
13           5 16 12 9 8 11 15      
      15 10 14 3 9     16   2      
4                 2   6 1 14   5
5                 13 3     12    
Showing puzzle number: 634
Puzzletype: Symmetrical Sudoku
Startnumbers: 94
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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