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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.

1149469 puzzles downloaded.

2 9 11       12                  
    10     13 4 6 15     11 2     14
            2   14   13 3 11 4 12  
5 13           9       10       1
3   1 4   9     6             7
10     5 4   6   7 13 16         12
            14 16 3              
            13   1 14 5     10   9
6   2     4 1 3   15            
              2 11 16            
1         10 5 15   12   6 7     11
11             14     1   4 9   15
9       12       5           13 2
  8 5 16 14 6   13   1            
4     6 15     1 12 11 9     8    
                  8       6 14 4
Showing puzzle number: 1950
Puzzletype: Symmetrical Sudoku
Startnumbers: 94
Difficulty: Very easy (0)
Solution methods: SiSo SC
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