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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.

  7 12 6 10           9         13
        9     2 8 11   13       10
    10     4       1   15     14 3
3   5       6 1     4          
13               3           12  
  16     12     13         3     14
14 11     3 16     5 15   12 9   1  
  10 15   6         8 13         11
7         10 9         14   8 11  
  14   4 2   7 11     3 9     5 12
1     10         11     5     16  
  12           16               9
          2     1 9       5   16
2 3     16   1       7     12    
6       13   10 4 14     2        
8         6           3 1 9 4  
Showing puzzle number: 2146
Puzzletype: Symmetrical Sudoku
Startnumbers: 92
Difficulty: Easy (0)
Solution methods: SiSo SC SB
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